21167380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4789}}^1$

素因数の和:4828

約数の個数: 48

約数和(自身を含む): 50697360

約数和(自身を除く): 29529980

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, 4789, 9578, 19156, 23945, 47890, 62257, 81413, 95780, 124514, 162826, 249028, 311285, 325652, 407065, 622570, 814130, 1058369, 1245140, 1628260, 2116738, 4233476, 5291845, 10583690, 21167380]

約数ペア:

[(1, 21167380), (2, 10583690), (4, 5291845), (5, 4233476), (10, 2116738), (13, 1628260), (17, 1245140), (20, 1058369), (26, 814130), (34, 622570), (52, 407065), (65, 325652), (68, 311285), (85, 249028), (130, 162826), (170, 124514), (221, 95780), (260, 81413), (340, 62257), (442, 47890), (884, 23945), (1105, 19156), (2210, 9578), (4420, 4789)]