21597160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1013}}^1$

素因数の和:1078

約数の個数: 64

約数和(自身を含む): 53660880

約数和(自身を除く): 32063720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1013, 1066, 1640, 2026, 2132, 2665, 4052, 4264, 5065, 5330, 8104, 10130, 10660, 13169, 20260, 21320, 26338, 40520, 41533, 52676, 65845, 83066, 105352, 131690, 166132, 207665, 263380, 332264, 415330, 526760, 539929, 830660, 1079858, 1661320, 2159716, 2699645, 4319432, 5399290, 10798580, 21597160]

約数ペア:

[(1, 21597160), (2, 10798580), (4, 5399290), (5, 4319432), (8, 2699645), (10, 2159716), (13, 1661320), (20, 1079858), (26, 830660), (40, 539929), (41, 526760), (52, 415330), (65, 332264), (82, 263380), (104, 207665), (130, 166132), (164, 131690), (205, 105352), (260, 83066), (328, 65845), (410, 52676), (520, 41533), (533, 40520), (820, 26338), (1013, 21320), (1066, 20260), (1640, 13169), (2026, 10660), (2132, 10130), (2665, 8104), (4052, 5330), (4264, 5065)]