21000314640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{20681}}^1\times {\mathrm{4231}}^1$

素因数の和:24928

約数の個数: 80

約数和(自身を含む): 65119510656

約数和(自身を除く): 44119196016

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 4231, 8462, 12693, 16924, 20681, 21155, 25386, 33848, 41362, 42310, 50772, 62043, 63465, 67696, 82724, 84620, 101544, 103405, 124086, 126930, 165448, 169240, 203088, 206810, 248172, 253860, 310215, 330896, 338480, 413620, 496344, 507720, 620430, 827240, 992688, 1015440, 1240860, 1654480, 2481720, 4963440, 87501311, 175002622, 262503933, 350005244, 437506555, 525007866, 700010488, 875013110, 1050015732, 1312519665, 1400020976, 1750026220, 2100031464, 2625039330, 3500052440, 4200062928, 5250078660, 7000104880, 10500157320, 21000314640]

約数ペア:

[(1, 21000314640), (2, 10500157320), (3, 7000104880), (4, 5250078660), (5, 4200062928), (6, 3500052440), (8, 2625039330), (10, 2100031464), (12, 1750026220), (15, 1400020976), (16, 1312519665), (20, 1050015732), (24, 875013110), (30, 700010488), (40, 525007866), (48, 437506555), (60, 350005244), (80, 262503933), (120, 175002622), (240, 87501311), (4231, 4963440), (8462, 2481720), (12693, 1654480), (16924, 1240860), (20681, 1015440), (21155, 992688), (25386, 827240), (33848, 620430), (41362, 507720), (42310, 496344), (50772, 413620), (62043, 338480), (63465, 330896), (67696, 310215), (82724, 253860), (84620, 248172), (101544, 206810), (103405, 203088), (124086, 169240), (126930, 165448)]