278962180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:282

約数の個数: 192

約数和(自身を含む): 774144000

約数和(自身を除く): 495181820

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 28, 31, 34, 35, 38, 62, 68, 70, 76, 85, 95, 119, 124, 133, 140, 155, 170, 190, 199, 217, 238, 266, 310, 323, 340, 380, 398, 434, 476, 527, 532, 589, 595, 620, 646, 665, 796, 868, 995, 1054, 1085, 1178, 1190, 1292, 1330, 1393, 1615, 1990, 2108, 2170, 2261, 2356, 2380, 2635, 2660, 2786, 2945, 3230, 3383, 3689, 3781, 3980, 4123, 4340, 4522, 5270, 5572, 5890, 6169, 6460, 6766, 6965, 7378, 7562, 8246, 9044, 10013, 10540, 11305, 11780, 12338, 13532, 13930, 14756, 15124, 16492, 16915, 18445, 18905, 20026, 20615, 22610, 23681, 24676, 26467, 27860, 30845, 33830, 36890, 37810, 40052, 41230, 43183, 45220, 47362, 50065, 52934, 61690, 64277, 67660, 70091, 73780, 75620, 82460, 86366, 94724, 100130, 104873, 105868, 117211, 118405, 123380, 128554, 132335, 140182, 172732, 200260, 209746, 215915, 234422, 236810, 257108, 264670, 280364, 321385, 350455, 419492, 431830, 449939, 468844, 473620, 524365, 529340, 586055, 642770, 700910, 734111, 820477, 863660, 899878, 1048730, 1172110, 1285540, 1401820, 1468222, 1640954, 1799756, 1992587, 2097460, 2249695, 2344220, 2936444, 3281908, 3670555, 3985174, 4102385, 4499390, 7341110, 7970348, 8204770, 8998780, 9962935, 13948109, 14682220, 16409540, 19925870, 27896218, 39851740, 55792436, 69740545, 139481090, 278962180]

約数ペア:

[(1, 278962180), (2, 139481090), (4, 69740545), (5, 55792436), (7, 39851740), (10, 27896218), (14, 19925870), (17, 16409540), (19, 14682220), (20, 13948109), (28, 9962935), (31, 8998780), (34, 8204770), (35, 7970348), (38, 7341110), (62, 4499390), (68, 4102385), (70, 3985174), (76, 3670555), (85, 3281908), (95, 2936444), (119, 2344220), (124, 2249695), (133, 2097460), (140, 1992587), (155, 1799756), (170, 1640954), (190, 1468222), (199, 1401820), (217, 1285540), (238, 1172110), (266, 1048730), (310, 899878), (323, 863660), (340, 820477), (380, 734111), (398, 700910), (434, 642770), (476, 586055), (527, 529340), (532, 524365), (589, 473620), (595, 468844), (620, 449939), (646, 431830), (665, 419492), (796, 350455), (868, 321385), (995, 280364), (1054, 264670), (1085, 257108), (1178, 236810), (1190, 234422), (1292, 215915), (1330, 209746), (1393, 200260), (1615, 172732), (1990, 140182), (2108, 132335), (2170, 128554), (2261, 123380), (2356, 118405), (2380, 117211), (2635, 105868), (2660, 104873), (2786, 100130), (2945, 94724), (3230, 86366), (3383, 82460), (3689, 75620), (3781, 73780), (3980, 70091), (4123, 67660), (4340, 64277), (4522, 61690), (5270, 52934), (5572, 50065), (5890, 47362), (6169, 45220), (6460, 43183), (6766, 41230), (6965, 40052), (7378, 37810), (7562, 36890), (8246, 33830), (9044, 30845), (10013, 27860), (10540, 26467), (11305, 24676), (11780, 23681), (12338, 22610), (13532, 20615), (13930, 20026), (14756, 18905), (15124, 18445), (16492, 16915)]