21226140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 71180928

約数和(自身を除く): 49954788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 47, 52, 60, 65, 78, 90, 94, 117, 130, 141, 156, 180, 188, 193, 195, 234, 235, 260, 282, 386, 390, 423, 468, 470, 564, 579, 585, 611, 705, 772, 780, 846, 940, 965, 1158, 1170, 1222, 1410, 1692, 1737, 1833, 1930, 2115, 2316, 2340, 2444, 2509, 2820, 2895, 3055, 3474, 3666, 3860, 4230, 5018, 5499, 5790, 6110, 6948, 7332, 7527, 8460, 8685, 9071, 9165, 10036, 10998, 11580, 12220, 12545, 15054, 17370, 18142, 18330, 21996, 22581, 25090, 27213, 27495, 30108, 34740, 36284, 36660, 37635, 45162, 45355, 50180, 54426, 54990, 75270, 81639, 90324, 90710, 108852, 109980, 112905, 117923, 136065, 150540, 163278, 181420, 225810, 235846, 272130, 326556, 353769, 408195, 451620, 471692, 544260, 589615, 707538, 816390, 1061307, 1179230, 1415076, 1632780, 1768845, 2122614, 2358460, 3537690, 4245228, 5306535, 7075380, 10613070, 21226140]

約数ペア:

[(1, 21226140), (2, 10613070), (3, 7075380), (4, 5306535), (5, 4245228), (6, 3537690), (9, 2358460), (10, 2122614), (12, 1768845), (13, 1632780), (15, 1415076), (18, 1179230), (20, 1061307), (26, 816390), (30, 707538), (36, 589615), (39, 544260), (45, 471692), (47, 451620), (52, 408195), (60, 353769), (65, 326556), (78, 272130), (90, 235846), (94, 225810), (117, 181420), (130, 163278), (141, 150540), (156, 136065), (180, 117923), (188, 112905), (193, 109980), (195, 108852), (234, 90710), (235, 90324), (260, 81639), (282, 75270), (386, 54990), (390, 54426), (423, 50180), (468, 45355), (470, 45162), (564, 37635), (579, 36660), (585, 36284), (611, 34740), (705, 30108), (772, 27495), (780, 27213), (846, 25090), (940, 22581), (965, 21996), (1158, 18330), (1170, 18142), (1222, 17370), (1410, 15054), (1692, 12545), (1737, 12220), (1833, 11580), (1930, 10998), (2115, 10036), (2316, 9165), (2340, 9071), (2444, 8685), (2509, 8460), (2820, 7527), (2895, 7332), (3055, 6948), (3474, 6110), (3666, 5790), (3860, 5499), (4230, 5018)]