21117460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:353

約数の個数: 96

約数和(自身を含む): 56109312

約数和(自身を除く): 34991852

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 41, 52, 65, 70, 82, 91, 130, 140, 164, 182, 205, 260, 283, 287, 364, 410, 455, 533, 566, 574, 820, 910, 1066, 1132, 1148, 1415, 1435, 1820, 1981, 2132, 2665, 2830, 2870, 3679, 3731, 3962, 5330, 5660, 5740, 7358, 7462, 7924, 9905, 10660, 11603, 14716, 14924, 18395, 18655, 19810, 23206, 25753, 36790, 37310, 39620, 46412, 51506, 58015, 73580, 74620, 81221, 103012, 116030, 128765, 150839, 162442, 232060, 257530, 301678, 324884, 406105, 515060, 603356, 754195, 812210, 1055873, 1508390, 1624420, 2111746, 3016780, 4223492, 5279365, 10558730, 21117460]

約数ペア:

[(1, 21117460), (2, 10558730), (4, 5279365), (5, 4223492), (7, 3016780), (10, 2111746), (13, 1624420), (14, 1508390), (20, 1055873), (26, 812210), (28, 754195), (35, 603356), (41, 515060), (52, 406105), (65, 324884), (70, 301678), (82, 257530), (91, 232060), (130, 162442), (140, 150839), (164, 128765), (182, 116030), (205, 103012), (260, 81221), (283, 74620), (287, 73580), (364, 58015), (410, 51506), (455, 46412), (533, 39620), (566, 37310), (574, 36790), (820, 25753), (910, 23206), (1066, 19810), (1132, 18655), (1148, 18395), (1415, 14924), (1435, 14716), (1820, 11603), (1981, 10660), (2132, 9905), (2665, 7924), (2830, 7462), (2870, 7358), (3679, 5740), (3731, 5660), (3962, 5330)]