19870750655

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1\times {\mathrm{1423}}^1$

素因数の和:1776

約数の個数: 64

約数和(自身を含む): 28799705088

約数和(自身を除く): 8928954433

約数列:

[1, 5, 7, 35, 37, 41, 185, 205, 259, 263, 287, 1295, 1315, 1423, 1435, 1517, 1841, 7115, 7585, 9205, 9731, 9961, 10619, 10783, 48655, 49805, 52651, 53095, 53915, 58343, 68117, 75481, 263255, 291715, 340585, 368557, 374249, 377405, 398971, 408401, 1842785, 1871245, 1994855, 2042005, 2158691, 2619743, 2792797, 10793455, 13098715, 13847213, 13963985, 15110837, 15344209, 69236065, 75554185, 76721045, 96930491, 107409463, 484652455, 537047315, 567735733, 2838678665, 3974150131, 19870750655]

約数ペア:

[(1, 19870750655), (5, 3974150131), (7, 2838678665), (35, 567735733), (37, 537047315), (41, 484652455), (185, 107409463), (205, 96930491), (259, 76721045), (263, 75554185), (287, 69236065), (1295, 15344209), (1315, 15110837), (1423, 13963985), (1435, 13847213), (1517, 13098715), (1841, 10793455), (7115, 2792797), (7585, 2619743), (9205, 2158691), (9731, 2042005), (9961, 1994855), (10619, 1871245), (10783, 1842785), (48655, 408401), (49805, 398971), (52651, 377405), (53095, 374249), (53915, 368557), (58343, 340585), (68117, 291715), (75481, 263255)]