28984280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 70912800

約数和(自身を除く): 41928520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 260, 278, 401, 520, 556, 695, 802, 1112, 1390, 1604, 1807, 2005, 2780, 3208, 3614, 4010, 5213, 5560, 7228, 8020, 9035, 10426, 14456, 16040, 18070, 20852, 26065, 36140, 41704, 52130, 55739, 72280, 104260, 111478, 208520, 222956, 278695, 445912, 557390, 724607, 1114780, 1449214, 2229560, 2898428, 3623035, 5796856, 7246070, 14492140, 28984280]

約数ペア:

[(1, 28984280), (2, 14492140), (4, 7246070), (5, 5796856), (8, 3623035), (10, 2898428), (13, 2229560), (20, 1449214), (26, 1114780), (40, 724607), (52, 557390), (65, 445912), (104, 278695), (130, 222956), (139, 208520), (260, 111478), (278, 104260), (401, 72280), (520, 55739), (556, 52130), (695, 41704), (802, 36140), (1112, 26065), (1390, 20852), (1604, 18070), (1807, 16040), (2005, 14456), (2780, 10426), (3208, 9035), (3614, 8020), (4010, 7228), (5213, 5560)]