21194940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{937}}^1$

素因数の和:991

約数の個数: 96

約数和(自身を含む): 66185280

約数和(自身を除く): 44990340

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, 937, 1131, 1508, 1740, 1874, 1885, 2262, 2811, 3748, 3770, 4524, 4685, 5622, 5655, 7540, 9370, 11244, 11310, 12181, 14055, 18740, 22620, 24362, 27173, 28110, 36543, 48724, 54346, 56220, 60905, 73086, 81519, 108692, 121810, 135865, 146172, 163038, 182715, 243620, 271730, 326076, 353249, 365430, 407595, 543460, 706498, 730860, 815190, 1059747, 1412996, 1630380, 1766245, 2119494, 3532490, 4238988, 5298735, 7064980, 10597470, 21194940]

約数ペア:

[(1, 21194940), (2, 10597470), (3, 7064980), (4, 5298735), (5, 4238988), (6, 3532490), (10, 2119494), (12, 1766245), (13, 1630380), (15, 1412996), (20, 1059747), (26, 815190), (29, 730860), (30, 706498), (39, 543460), (52, 407595), (58, 365430), (60, 353249), (65, 326076), (78, 271730), (87, 243620), (116, 182715), (130, 163038), (145, 146172), (156, 135865), (174, 121810), (195, 108692), (260, 81519), (290, 73086), (348, 60905), (377, 56220), (390, 54346), (435, 48724), (580, 36543), (754, 28110), (780, 27173), (870, 24362), (937, 22620), (1131, 18740), (1508, 14055), (1740, 12181), (1874, 11310), (1885, 11244), (2262, 9370), (2811, 7540), (3748, 5655), (3770, 5622), (4524, 4685)]