9920690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^2$

素因数の和:171

約数の個数: 48

約数和(自身を含む): 20670552

約数和(自身を除く): 10749862

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 67, 85, 130, 134, 170, 221, 335, 442, 670, 871, 1105, 1139, 1742, 2210, 2278, 4355, 4489, 5695, 8710, 8978, 11390, 14807, 22445, 29614, 44890, 58357, 74035, 76313, 116714, 148070, 152626, 291785, 381565, 583570, 763130, 992069, 1984138, 4960345, 9920690]

約数ペア:

[(1, 9920690), (2, 4960345), (5, 1984138), (10, 992069), (13, 763130), (17, 583570), (26, 381565), (34, 291785), (65, 152626), (67, 148070), (85, 116714), (130, 76313), (134, 74035), (170, 58357), (221, 44890), (335, 29614), (442, 22445), (670, 14807), (871, 11390), (1105, 8978), (1139, 8710), (1742, 5695), (2210, 4489), (2278, 4355)]