21731970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{541}}^1$

素因数の和:667

約数の個数: 64

約数和(自身を含む): 56818944

約数和(自身を除く): 35086974

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 103, 130, 195, 206, 309, 390, 515, 541, 618, 1030, 1082, 1339, 1545, 1623, 2678, 2705, 3090, 3246, 4017, 5410, 6695, 7033, 8034, 8115, 13390, 14066, 16230, 20085, 21099, 35165, 40170, 42198, 55723, 70330, 105495, 111446, 167169, 210990, 278615, 334338, 557230, 724399, 835845, 1448798, 1671690, 2173197, 3621995, 4346394, 7243990, 10865985, 21731970]

約数ペア:

[(1, 21731970), (2, 10865985), (3, 7243990), (5, 4346394), (6, 3621995), (10, 2173197), (13, 1671690), (15, 1448798), (26, 835845), (30, 724399), (39, 557230), (65, 334338), (78, 278615), (103, 210990), (130, 167169), (195, 111446), (206, 105495), (309, 70330), (390, 55723), (515, 42198), (541, 40170), (618, 35165), (1030, 21099), (1082, 20085), (1339, 16230), (1545, 14066), (1623, 13390), (2678, 8115), (2705, 8034), (3090, 7033), (3246, 6695), (4017, 5410)]