21883420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4951}}^1$

素因数の和:4990

約数の個数: 48

約数和(自身を含む): 52411968

約数和(自身を除く): 30528548

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4951, 9902, 19804, 24755, 49510, 64363, 84167, 99020, 128726, 168334, 257452, 321815, 336668, 420835, 643630, 841670, 1094171, 1287260, 1683340, 2188342, 4376684, 5470855, 10941710, 21883420]

約数ペア:

[(1, 21883420), (2, 10941710), (4, 5470855), (5, 4376684), (10, 2188342), (13, 1683340), (17, 1287260), (20, 1094171), (26, 841670), (34, 643630), (52, 420835), (65, 336668), (68, 321815), (85, 257452), (130, 168334), (170, 128726), (221, 99020), (260, 84167), (340, 64363), (442, 49510), (884, 24755), (1105, 19804), (2210, 9902), (4420, 4951)]