21554520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 71547840

約数和(自身を除く): 49993320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 41, 52, 60, 65, 78, 82, 104, 120, 123, 130, 156, 164, 195, 205, 246, 260, 312, 328, 337, 390, 410, 492, 520, 533, 615, 674, 780, 820, 984, 1011, 1066, 1230, 1348, 1560, 1599, 1640, 1685, 2022, 2132, 2460, 2665, 2696, 3198, 3370, 4044, 4264, 4381, 4920, 5055, 5330, 6396, 6740, 7995, 8088, 8762, 10110, 10660, 12792, 13143, 13480, 13817, 15990, 17524, 20220, 21320, 21905, 26286, 27634, 31980, 35048, 40440, 41451, 43810, 52572, 55268, 63960, 65715, 69085, 82902, 87620, 105144, 110536, 131430, 138170, 165804, 175240, 179621, 207255, 262860, 276340, 331608, 359242, 414510, 525720, 538863, 552680, 718484, 829020, 898105, 1077726, 1436968, 1658040, 1796210, 2155452, 2694315, 3592420, 4310904, 5388630, 7184840, 10777260, 21554520]

約数ペア:

[(1, 21554520), (2, 10777260), (3, 7184840), (4, 5388630), (5, 4310904), (6, 3592420), (8, 2694315), (10, 2155452), (12, 1796210), (13, 1658040), (15, 1436968), (20, 1077726), (24, 898105), (26, 829020), (30, 718484), (39, 552680), (40, 538863), (41, 525720), (52, 414510), (60, 359242), (65, 331608), (78, 276340), (82, 262860), (104, 207255), (120, 179621), (123, 175240), (130, 165804), (156, 138170), (164, 131430), (195, 110536), (205, 105144), (246, 87620), (260, 82902), (312, 69085), (328, 65715), (337, 63960), (390, 55268), (410, 52572), (492, 43810), (520, 41451), (533, 40440), (615, 35048), (674, 31980), (780, 27634), (820, 26286), (984, 21905), (1011, 21320), (1066, 20220), (1230, 17524), (1348, 15990), (1560, 13817), (1599, 13480), (1640, 13143), (1685, 12792), (2022, 10660), (2132, 10110), (2460, 8762), (2665, 8088), (2696, 7995), (3198, 6740), (3370, 6396), (4044, 5330), (4264, 5055), (4381, 4920)]