21227640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{683}}^1$

素因数の和:741

約数の個数: 128

約数和(自身を含む): 74856960

約数和(自身を除く): 53629320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 683, 740, 777, 840, 888, 1036, 1110, 1295, 1366, 1480, 1554, 2049, 2072, 2220, 2590, 2732, 3108, 3415, 3885, 4098, 4440, 4781, 5180, 5464, 6216, 6830, 7770, 8196, 9562, 10245, 10360, 13660, 14343, 15540, 16392, 19124, 20490, 23905, 25271, 27320, 28686, 31080, 38248, 40980, 47810, 50542, 57372, 71715, 75813, 81960, 95620, 101084, 114744, 126355, 143430, 151626, 176897, 191240, 202168, 252710, 286860, 303252, 353794, 379065, 505420, 530691, 573720, 606504, 707588, 758130, 884485, 1010840, 1061382, 1415176, 1516260, 1768970, 2122764, 2653455, 3032520, 3537940, 4245528, 5306910, 7075880, 10613820, 21227640]

約数ペア:

[(1, 21227640), (2, 10613820), (3, 7075880), (4, 5306910), (5, 4245528), (6, 3537940), (7, 3032520), (8, 2653455), (10, 2122764), (12, 1768970), (14, 1516260), (15, 1415176), (20, 1061382), (21, 1010840), (24, 884485), (28, 758130), (30, 707588), (35, 606504), (37, 573720), (40, 530691), (42, 505420), (56, 379065), (60, 353794), (70, 303252), (74, 286860), (84, 252710), (105, 202168), (111, 191240), (120, 176897), (140, 151626), (148, 143430), (168, 126355), (185, 114744), (210, 101084), (222, 95620), (259, 81960), (280, 75813), (296, 71715), (370, 57372), (420, 50542), (444, 47810), (518, 40980), (555, 38248), (683, 31080), (740, 28686), (777, 27320), (840, 25271), (888, 23905), (1036, 20490), (1110, 19124), (1295, 16392), (1366, 15540), (1480, 14343), (1554, 13660), (2049, 10360), (2072, 10245), (2220, 9562), (2590, 8196), (2732, 7770), (3108, 6830), (3415, 6216), (3885, 5464), (4098, 5180), (4440, 4781)]