21275280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2273}}^1$

素因数の和:2305

約数の個数: 120

約数和(自身を含む): 76979448

約数和(自身を除く): 55704168

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2273, 2340, 3120, 4546, 4680, 6819, 9092, 9360, 11365, 13638, 18184, 20457, 22730, 27276, 29549, 34095, 36368, 40914, 45460, 54552, 59098, 68190, 81828, 88647, 90920, 102285, 109104, 118196, 136380, 147745, 163656, 177294, 181840, 204570, 236392, 265941, 272760, 295490, 327312, 354588, 409140, 443235, 472784, 531882, 545520, 590980, 709176, 818280, 886470, 1063764, 1181960, 1329705, 1418352, 1636560, 1772940, 2127528, 2363920, 2659410, 3545880, 4255056, 5318820, 7091760, 10637640, 21275280]

約数ペア:

[(1, 21275280), (2, 10637640), (3, 7091760), (4, 5318820), (5, 4255056), (6, 3545880), (8, 2659410), (9, 2363920), (10, 2127528), (12, 1772940), (13, 1636560), (15, 1418352), (16, 1329705), (18, 1181960), (20, 1063764), (24, 886470), (26, 818280), (30, 709176), (36, 590980), (39, 545520), (40, 531882), (45, 472784), (48, 443235), (52, 409140), (60, 354588), (65, 327312), (72, 295490), (78, 272760), (80, 265941), (90, 236392), (104, 204570), (117, 181840), (120, 177294), (130, 163656), (144, 147745), (156, 136380), (180, 118196), (195, 109104), (208, 102285), (234, 90920), (240, 88647), (260, 81828), (312, 68190), (360, 59098), (390, 54552), (468, 45460), (520, 40914), (585, 36368), (624, 34095), (720, 29549), (780, 27276), (936, 22730), (1040, 20457), (1170, 18184), (1560, 13638), (1872, 11365), (2273, 9360), (2340, 9092), (3120, 6819), (4546, 4680)]