25626640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{601}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 65839536

約数和(自身を除く): 40212896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 41, 52, 65, 80, 82, 104, 130, 164, 205, 208, 260, 328, 410, 520, 533, 601, 656, 820, 1040, 1066, 1202, 1640, 2132, 2404, 2665, 3005, 3280, 4264, 4808, 5330, 6010, 7813, 8528, 9616, 10660, 12020, 15626, 21320, 24040, 24641, 31252, 39065, 42640, 48080, 49282, 62504, 78130, 98564, 123205, 125008, 156260, 197128, 246410, 312520, 320333, 394256, 492820, 625040, 640666, 985640, 1281332, 1601665, 1971280, 2562664, 3203330, 5125328, 6406660, 12813320, 25626640]

約数ペア:

[(1, 25626640), (2, 12813320), (4, 6406660), (5, 5125328), (8, 3203330), (10, 2562664), (13, 1971280), (16, 1601665), (20, 1281332), (26, 985640), (40, 640666), (41, 625040), (52, 492820), (65, 394256), (80, 320333), (82, 312520), (104, 246410), (130, 197128), (164, 156260), (205, 125008), (208, 123205), (260, 98564), (328, 78130), (410, 62504), (520, 49282), (533, 48080), (601, 42640), (656, 39065), (820, 31252), (1040, 24641), (1066, 24040), (1202, 21320), (1640, 15626), (2132, 12020), (2404, 10660), (2665, 9616), (3005, 8528), (3280, 7813), (4264, 6010), (4808, 5330)]