21787110

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:203

約数の個数: 128

約数和(自身を含む): 63590400

約数和(自身を除く): 41803290

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 31, 38, 45, 54, 57, 62, 90, 93, 95, 114, 135, 137, 155, 171, 186, 190, 270, 274, 279, 285, 310, 342, 411, 465, 513, 558, 570, 589, 685, 822, 837, 855, 930, 1026, 1178, 1233, 1370, 1395, 1674, 1710, 1767, 2055, 2466, 2565, 2603, 2790, 2945, 3534, 3699, 4110, 4185, 4247, 5130, 5206, 5301, 5890, 6165, 7398, 7809, 8370, 8494, 8835, 10602, 12330, 12741, 13015, 15618, 15903, 17670, 18495, 21235, 23427, 25482, 26030, 26505, 31806, 36990, 38223, 39045, 42470, 46854, 53010, 63705, 70281, 76446, 78090, 79515, 80693, 114669, 117135, 127410, 140562, 159030, 161386, 191115, 229338, 234270, 242079, 351405, 382230, 403465, 484158, 573345, 702810, 726237, 806930, 1146690, 1210395, 1452474, 2178711, 2420790, 3631185, 4357422, 7262370, 10893555, 21787110]

約数ペア:

[(1, 21787110), (2, 10893555), (3, 7262370), (5, 4357422), (6, 3631185), (9, 2420790), (10, 2178711), (15, 1452474), (18, 1210395), (19, 1146690), (27, 806930), (30, 726237), (31, 702810), (38, 573345), (45, 484158), (54, 403465), (57, 382230), (62, 351405), (90, 242079), (93, 234270), (95, 229338), (114, 191115), (135, 161386), (137, 159030), (155, 140562), (171, 127410), (186, 117135), (190, 114669), (270, 80693), (274, 79515), (279, 78090), (285, 76446), (310, 70281), (342, 63705), (411, 53010), (465, 46854), (513, 42470), (558, 39045), (570, 38223), (589, 36990), (685, 31806), (822, 26505), (837, 26030), (855, 25482), (930, 23427), (1026, 21235), (1178, 18495), (1233, 17670), (1370, 15903), (1395, 15618), (1674, 13015), (1710, 12741), (1767, 12330), (2055, 10602), (2466, 8835), (2565, 8494), (2603, 8370), (2790, 7809), (2945, 7398), (3534, 6165), (3699, 5890), (4110, 5301), (4185, 5206), (4247, 5130)]