20037560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 48470400

約数和(自身を除く): 28432840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 316, 340, 373, 395, 632, 680, 746, 790, 1343, 1492, 1580, 1865, 2686, 2984, 3160, 3730, 5372, 6341, 6715, 7460, 10744, 12682, 13430, 14920, 25364, 26860, 29467, 31705, 50728, 53720, 58934, 63410, 117868, 126820, 147335, 235736, 253640, 294670, 500939, 589340, 1001878, 1178680, 2003756, 2504695, 4007512, 5009390, 10018780, 20037560]

約数ペア:

[(1, 20037560), (2, 10018780), (4, 5009390), (5, 4007512), (8, 2504695), (10, 2003756), (17, 1178680), (20, 1001878), (34, 589340), (40, 500939), (68, 294670), (79, 253640), (85, 235736), (136, 147335), (158, 126820), (170, 117868), (316, 63410), (340, 58934), (373, 53720), (395, 50728), (632, 31705), (680, 29467), (746, 26860), (790, 25364), (1343, 14920), (1492, 13430), (1580, 12682), (1865, 10744), (2686, 7460), (2984, 6715), (3160, 6341), (3730, 5372)]