21871440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{821}}^1$

素因数の和:877

約数の個数: 120

約数和(自身を含む): 75528648

約数和(自身を除く): 53657208

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, 821, 888, 1110, 1332, 1480, 1642, 1665, 1776, 2220, 2463, 2664, 2960, 3284, 3330, 4105, 4440, 4926, 5328, 6568, 6660, 7389, 8210, 8880, 9852, 12315, 13136, 13320, 14778, 16420, 19704, 24630, 26640, 29556, 30377, 32840, 36945, 39408, 49260, 59112, 60754, 65680, 73890, 91131, 98520, 118224, 121508, 147780, 151885, 182262, 197040, 243016, 273393, 295560, 303770, 364524, 455655, 486032, 546786, 591120, 607540, 729048, 911310, 1093572, 1215080, 1366965, 1458096, 1822620, 2187144, 2430160, 2733930, 3645240, 4374288, 5467860, 7290480, 10935720, 21871440]

約数ペア:

[(1, 21871440), (2, 10935720), (3, 7290480), (4, 5467860), (5, 4374288), (6, 3645240), (8, 2733930), (9, 2430160), (10, 2187144), (12, 1822620), (15, 1458096), (16, 1366965), (18, 1215080), (20, 1093572), (24, 911310), (30, 729048), (36, 607540), (37, 591120), (40, 546786), (45, 486032), (48, 455655), (60, 364524), (72, 303770), (74, 295560), (80, 273393), (90, 243016), (111, 197040), (120, 182262), (144, 151885), (148, 147780), (180, 121508), (185, 118224), (222, 98520), (240, 91131), (296, 73890), (333, 65680), (360, 60754), (370, 59112), (444, 49260), (555, 39408), (592, 36945), (666, 32840), (720, 30377), (740, 29556), (821, 26640), (888, 24630), (1110, 19704), (1332, 16420), (1480, 14778), (1642, 13320), (1665, 13136), (1776, 12315), (2220, 9852), (2463, 8880), (2664, 8210), (2960, 7389), (3284, 6660), (3330, 6568), (4105, 5328), (4440, 4926)]