221156480

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:278

約数の個数: 128

約数和(自身を含む): 556968960

約数和(自身を除く): 335812480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 71, 80, 124, 128, 142, 155, 157, 160, 248, 284, 310, 314, 320, 355, 496, 568, 620, 628, 640, 710, 785, 992, 1136, 1240, 1256, 1420, 1570, 1984, 2201, 2272, 2480, 2512, 2840, 3140, 3968, 4402, 4544, 4867, 4960, 5024, 5680, 6280, 8804, 9088, 9734, 9920, 10048, 11005, 11147, 11360, 12560, 17608, 19468, 19840, 20096, 22010, 22294, 22720, 24335, 25120, 35216, 38936, 44020, 44588, 45440, 48670, 50240, 55735, 70432, 77872, 88040, 89176, 97340, 100480, 111470, 140864, 155744, 176080, 178352, 194680, 222940, 281728, 311488, 345557, 352160, 356704, 389360, 445880, 622976, 691114, 704320, 713408, 778720, 891760, 1382228, 1408640, 1426816, 1557440, 1727785, 1783520, 2764456, 3114880, 3455570, 3567040, 5528912, 6911140, 7134080, 11057824, 13822280, 22115648, 27644560, 44231296, 55289120, 110578240, 221156480]

約数ペア:

[(1, 221156480), (2, 110578240), (4, 55289120), (5, 44231296), (8, 27644560), (10, 22115648), (16, 13822280), (20, 11057824), (31, 7134080), (32, 6911140), (40, 5528912), (62, 3567040), (64, 3455570), (71, 3114880), (80, 2764456), (124, 1783520), (128, 1727785), (142, 1557440), (155, 1426816), (157, 1408640), (160, 1382228), (248, 891760), (284, 778720), (310, 713408), (314, 704320), (320, 691114), (355, 622976), (496, 445880), (568, 389360), (620, 356704), (628, 352160), (640, 345557), (710, 311488), (785, 281728), (992, 222940), (1136, 194680), (1240, 178352), (1256, 176080), (1420, 155744), (1570, 140864), (1984, 111470), (2201, 100480), (2272, 97340), (2480, 89176), (2512, 88040), (2840, 77872), (3140, 70432), (3968, 55735), (4402, 50240), (4544, 48670), (4867, 45440), (4960, 44588), (5024, 44020), (5680, 38936), (6280, 35216), (8804, 25120), (9088, 24335), (9734, 22720), (9920, 22294), (10048, 22010), (11005, 20096), (11147, 19840), (11360, 19468), (12560, 17608)]