28322840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:313

約数の個数: 128

約数和(自身を含む): 81285120

約数和(自身を除く): 52962280

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 91, 104, 124, 130, 140, 155, 182, 217, 248, 251, 260, 280, 310, 364, 403, 434, 455, 502, 520, 620, 728, 806, 868, 910, 1004, 1085, 1240, 1255, 1612, 1736, 1757, 1820, 2008, 2015, 2170, 2510, 2821, 3224, 3263, 3514, 3640, 4030, 4340, 5020, 5642, 6526, 7028, 7781, 8060, 8680, 8785, 10040, 11284, 13052, 14056, 14105, 15562, 16120, 16315, 17570, 22568, 22841, 26104, 28210, 31124, 32630, 35140, 38905, 45682, 54467, 56420, 62248, 65260, 70280, 77810, 91364, 101153, 108934, 112840, 114205, 130520, 155620, 182728, 202306, 217868, 228410, 272335, 311240, 404612, 435736, 456820, 505765, 544670, 708071, 809224, 913640, 1011530, 1089340, 1416142, 2023060, 2178680, 2832284, 3540355, 4046120, 5664568, 7080710, 14161420, 28322840]

約数ペア:

[(1, 28322840), (2, 14161420), (4, 7080710), (5, 5664568), (7, 4046120), (8, 3540355), (10, 2832284), (13, 2178680), (14, 2023060), (20, 1416142), (26, 1089340), (28, 1011530), (31, 913640), (35, 809224), (40, 708071), (52, 544670), (56, 505765), (62, 456820), (65, 435736), (70, 404612), (91, 311240), (104, 272335), (124, 228410), (130, 217868), (140, 202306), (155, 182728), (182, 155620), (217, 130520), (248, 114205), (251, 112840), (260, 108934), (280, 101153), (310, 91364), (364, 77810), (403, 70280), (434, 65260), (455, 62248), (502, 56420), (520, 54467), (620, 45682), (728, 38905), (806, 35140), (868, 32630), (910, 31124), (1004, 28210), (1085, 26104), (1240, 22841), (1255, 22568), (1612, 17570), (1736, 16315), (1757, 16120), (1820, 15562), (2008, 14105), (2015, 14056), (2170, 13052), (2510, 11284), (2821, 10040), (3224, 8785), (3263, 8680), (3514, 8060), (3640, 7781), (4030, 7028), (4340, 6526), (5020, 5642)]