256980080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:295

約数の個数: 160

約数和(自身を含む): 716525568

約数和(自身を除く): 459545488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 113, 124, 131, 140, 155, 217, 226, 248, 262, 280, 310, 434, 452, 496, 524, 560, 565, 620, 655, 791, 868, 904, 917, 1048, 1085, 1130, 1240, 1310, 1582, 1736, 1808, 1834, 2096, 2170, 2260, 2480, 2620, 3164, 3472, 3503, 3668, 3955, 4061, 4340, 4520, 4585, 5240, 6328, 7006, 7336, 7910, 8122, 8680, 9040, 9170, 10480, 12656, 14012, 14672, 14803, 15820, 16244, 17360, 17515, 18340, 20305, 24521, 28024, 28427, 29606, 31640, 32488, 35030, 36680, 40610, 49042, 56048, 56854, 59212, 63280, 64976, 70060, 73360, 74015, 81220, 98084, 103621, 113708, 118424, 122605, 140120, 142135, 148030, 162440, 196168, 207242, 227416, 236848, 245210, 280240, 284270, 296060, 324880, 392336, 414484, 454832, 458893, 490420, 518105, 568540, 592120, 828968, 917786, 980840, 1036210, 1137080, 1184240, 1657936, 1835572, 1961680, 2072420, 2274160, 2294465, 3212251, 3671144, 4144840, 4588930, 6424502, 7342288, 8289680, 9177860, 12849004, 16061255, 18355720, 25698008, 32122510, 36711440, 51396016, 64245020, 128490040, 256980080]

約数ペア:

[(1, 256980080), (2, 128490040), (4, 64245020), (5, 51396016), (7, 36711440), (8, 32122510), (10, 25698008), (14, 18355720), (16, 16061255), (20, 12849004), (28, 9177860), (31, 8289680), (35, 7342288), (40, 6424502), (56, 4588930), (62, 4144840), (70, 3671144), (80, 3212251), (112, 2294465), (113, 2274160), (124, 2072420), (131, 1961680), (140, 1835572), (155, 1657936), (217, 1184240), (226, 1137080), (248, 1036210), (262, 980840), (280, 917786), (310, 828968), (434, 592120), (452, 568540), (496, 518105), (524, 490420), (560, 458893), (565, 454832), (620, 414484), (655, 392336), (791, 324880), (868, 296060), (904, 284270), (917, 280240), (1048, 245210), (1085, 236848), (1130, 227416), (1240, 207242), (1310, 196168), (1582, 162440), (1736, 148030), (1808, 142135), (1834, 140120), (2096, 122605), (2170, 118424), (2260, 113708), (2480, 103621), (2620, 98084), (3164, 81220), (3472, 74015), (3503, 73360), (3668, 70060), (3955, 64976), (4061, 63280), (4340, 59212), (4520, 56854), (4585, 56048), (5240, 49042), (6328, 40610), (7006, 36680), (7336, 35030), (7910, 32488), (8122, 31640), (8680, 29606), (9040, 28427), (9170, 28024), (10480, 24521), (12656, 20305), (14012, 18340), (14672, 17515), (14803, 17360), (15820, 16244)]