655003960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{227}}^1$

素因数の和:461

約数の個数: 128

約数和(自身を含む): 1654732800

約数和(自身を除く): 999728840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 179, 227, 248, 260, 310, 358, 403, 454, 520, 620, 716, 806, 895, 908, 1135, 1240, 1432, 1612, 1790, 1816, 2015, 2270, 2327, 2951, 3224, 3580, 4030, 4540, 4654, 5549, 5902, 7037, 7160, 8060, 9080, 9308, 11098, 11635, 11804, 14074, 14755, 16120, 18616, 22196, 23270, 23608, 27745, 28148, 29510, 35185, 40633, 44392, 46540, 55490, 56296, 59020, 70370, 72137, 81266, 91481, 93080, 110980, 118040, 140740, 144274, 162532, 182962, 203165, 221960, 281480, 288548, 325064, 360685, 365924, 406330, 457405, 528229, 577096, 721370, 731848, 812660, 914810, 1056458, 1259623, 1442740, 1625320, 1829620, 2112916, 2519246, 2641145, 2885480, 3659240, 4225832, 5038492, 5282290, 6298115, 10076984, 10564580, 12596230, 16375099, 21129160, 25192460, 32750198, 50384920, 65500396, 81875495, 131000792, 163750990, 327501980, 655003960]

約数ペア:

[(1, 655003960), (2, 327501980), (4, 163750990), (5, 131000792), (8, 81875495), (10, 65500396), (13, 50384920), (20, 32750198), (26, 25192460), (31, 21129160), (40, 16375099), (52, 12596230), (62, 10564580), (65, 10076984), (104, 6298115), (124, 5282290), (130, 5038492), (155, 4225832), (179, 3659240), (227, 2885480), (248, 2641145), (260, 2519246), (310, 2112916), (358, 1829620), (403, 1625320), (454, 1442740), (520, 1259623), (620, 1056458), (716, 914810), (806, 812660), (895, 731848), (908, 721370), (1135, 577096), (1240, 528229), (1432, 457405), (1612, 406330), (1790, 365924), (1816, 360685), (2015, 325064), (2270, 288548), (2327, 281480), (2951, 221960), (3224, 203165), (3580, 182962), (4030, 162532), (4540, 144274), (4654, 140740), (5549, 118040), (5902, 110980), (7037, 93080), (7160, 91481), (8060, 81266), (9080, 72137), (9308, 70370), (11098, 59020), (11635, 56296), (11804, 55490), (14074, 46540), (14755, 44392), (16120, 40633), (18616, 35185), (22196, 29510), (23270, 28148), (23608, 27745)]