21013980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{929}}^1$

素因数の和:983

約数の個数: 96

約数和(自身を含む): 65620800

約数和(自身を除く): 44606820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 78, 87, 116, 130, 145, 156, 174, 195, 260, 290, 348, 377, 390, 435, 580, 754, 780, 870, 929, 1131, 1508, 1740, 1858, 1885, 2262, 2787, 3716, 3770, 4524, 4645, 5574, 5655, 7540, 9290, 11148, 11310, 12077, 13935, 18580, 22620, 24154, 26941, 27870, 36231, 48308, 53882, 55740, 60385, 72462, 80823, 107764, 120770, 134705, 144924, 161646, 181155, 241540, 269410, 323292, 350233, 362310, 404115, 538820, 700466, 724620, 808230, 1050699, 1400932, 1616460, 1751165, 2101398, 3502330, 4202796, 5253495, 7004660, 10506990, 21013980]

約数ペア:

[(1, 21013980), (2, 10506990), (3, 7004660), (4, 5253495), (5, 4202796), (6, 3502330), (10, 2101398), (12, 1751165), (13, 1616460), (15, 1400932), (20, 1050699), (26, 808230), (29, 724620), (30, 700466), (39, 538820), (52, 404115), (58, 362310), (60, 350233), (65, 323292), (78, 269410), (87, 241540), (116, 181155), (130, 161646), (145, 144924), (156, 134705), (174, 120770), (195, 107764), (260, 80823), (290, 72462), (348, 60385), (377, 55740), (390, 53882), (435, 48308), (580, 36231), (754, 27870), (780, 26941), (870, 24154), (929, 22620), (1131, 18580), (1508, 13935), (1740, 12077), (1858, 11310), (1885, 11148), (2262, 9290), (2787, 7540), (3716, 5655), (3770, 5574), (4524, 4645)]