21551760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{809}}^1$

素因数の和:865

約数の個数: 120

約数和(自身を含む): 74426040

約数和(自身を除く): 52874280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 45, 48, 60, 72, 74, 80, 90, 111, 120, 144, 148, 180, 185, 222, 240, 296, 333, 360, 370, 444, 555, 592, 666, 720, 740, 809, 888, 1110, 1332, 1480, 1618, 1665, 1776, 2220, 2427, 2664, 2960, 3236, 3330, 4045, 4440, 4854, 5328, 6472, 6660, 7281, 8090, 8880, 9708, 12135, 12944, 13320, 14562, 16180, 19416, 24270, 26640, 29124, 29933, 32360, 36405, 38832, 48540, 58248, 59866, 64720, 72810, 89799, 97080, 116496, 119732, 145620, 149665, 179598, 194160, 239464, 269397, 291240, 299330, 359196, 448995, 478928, 538794, 582480, 598660, 718392, 897990, 1077588, 1197320, 1346985, 1436784, 1795980, 2155176, 2394640, 2693970, 3591960, 4310352, 5387940, 7183920, 10775880, 21551760]

約数ペア:

[(1, 21551760), (2, 10775880), (3, 7183920), (4, 5387940), (5, 4310352), (6, 3591960), (8, 2693970), (9, 2394640), (10, 2155176), (12, 1795980), (15, 1436784), (16, 1346985), (18, 1197320), (20, 1077588), (24, 897990), (30, 718392), (36, 598660), (37, 582480), (40, 538794), (45, 478928), (48, 448995), (60, 359196), (72, 299330), (74, 291240), (80, 269397), (90, 239464), (111, 194160), (120, 179598), (144, 149665), (148, 145620), (180, 119732), (185, 116496), (222, 97080), (240, 89799), (296, 72810), (333, 64720), (360, 59866), (370, 58248), (444, 48540), (555, 38832), (592, 36405), (666, 32360), (720, 29933), (740, 29124), (809, 26640), (888, 24270), (1110, 19416), (1332, 16180), (1480, 14562), (1618, 13320), (1665, 12944), (1776, 12135), (2220, 9708), (2427, 8880), (2664, 8090), (2960, 7281), (3236, 6660), (3330, 6472), (4045, 5328), (4440, 4854)]