251897940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6449}}^1$

素因数の和:6502

約数の個数: 144

約数和(自身を含む): 901555200

約数和(自身を除く): 649657260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 558, 620, 630, 651, 868, 930, 1085, 1116, 1260, 1302, 1395, 1860, 1953, 2170, 2604, 2790, 3255, 3906, 4340, 5580, 6449, 6510, 7812, 9765, 12898, 13020, 19347, 19530, 25796, 32245, 38694, 39060, 45143, 58041, 64490, 77388, 90286, 96735, 116082, 128980, 135429, 180572, 193470, 199919, 225715, 232164, 270858, 290205, 386940, 399838, 406287, 451430, 541716, 580410, 599757, 677145, 799676, 812574, 902860, 999595, 1160820, 1199514, 1354290, 1399433, 1625148, 1799271, 1999190, 2031435, 2399028, 2708580, 2798866, 2998785, 3598542, 3998380, 4062870, 4198299, 5597732, 5997570, 6997165, 7197084, 8125740, 8396598, 8996355, 11995140, 12594897, 13994330, 16793196, 17992710, 20991495, 25189794, 27988660, 35985420, 41982990, 50379588, 62974485, 83965980, 125948970, 251897940]

約数ペア:

[(1, 251897940), (2, 125948970), (3, 83965980), (4, 62974485), (5, 50379588), (6, 41982990), (7, 35985420), (9, 27988660), (10, 25189794), (12, 20991495), (14, 17992710), (15, 16793196), (18, 13994330), (20, 12594897), (21, 11995140), (28, 8996355), (30, 8396598), (31, 8125740), (35, 7197084), (36, 6997165), (42, 5997570), (45, 5597732), (60, 4198299), (62, 4062870), (63, 3998380), (70, 3598542), (84, 2998785), (90, 2798866), (93, 2708580), (105, 2399028), (124, 2031435), (126, 1999190), (140, 1799271), (155, 1625148), (180, 1399433), (186, 1354290), (210, 1199514), (217, 1160820), (252, 999595), (279, 902860), (310, 812574), (315, 799676), (372, 677145), (420, 599757), (434, 580410), (465, 541716), (558, 451430), (620, 406287), (630, 399838), (651, 386940), (868, 290205), (930, 270858), (1085, 232164), (1116, 225715), (1260, 199919), (1302, 193470), (1395, 180572), (1860, 135429), (1953, 128980), (2170, 116082), (2604, 96735), (2790, 90286), (3255, 77388), (3906, 64490), (4340, 58041), (5580, 45143), (6449, 39060), (6510, 38694), (7812, 32245), (9765, 25796), (12898, 19530), (13020, 19347)]