215980720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{1193}}^1$

素因数の和:1310

約数の個数: 80

約数和(自身を含む): 525894912

約数和(自身を除く): 309914192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 73, 80, 124, 146, 155, 248, 292, 310, 365, 496, 584, 620, 730, 1168, 1193, 1240, 1460, 2263, 2386, 2480, 2920, 4526, 4772, 5840, 5965, 9052, 9544, 11315, 11930, 18104, 19088, 22630, 23860, 36208, 36983, 45260, 47720, 73966, 87089, 90520, 95440, 147932, 174178, 181040, 184915, 295864, 348356, 369830, 435445, 591728, 696712, 739660, 870890, 1393424, 1479320, 1741780, 2699759, 2958640, 3483560, 5399518, 6967120, 10799036, 13498795, 21598072, 26997590, 43196144, 53995180, 107990360, 215980720]

約数ペア:

[(1, 215980720), (2, 107990360), (4, 53995180), (5, 43196144), (8, 26997590), (10, 21598072), (16, 13498795), (20, 10799036), (31, 6967120), (40, 5399518), (62, 3483560), (73, 2958640), (80, 2699759), (124, 1741780), (146, 1479320), (155, 1393424), (248, 870890), (292, 739660), (310, 696712), (365, 591728), (496, 435445), (584, 369830), (620, 348356), (730, 295864), (1168, 184915), (1193, 181040), (1240, 174178), (1460, 147932), (2263, 95440), (2386, 90520), (2480, 87089), (2920, 73966), (4526, 47720), (4772, 45260), (5840, 36983), (5965, 36208), (9052, 23860), (9544, 22630), (11315, 19088), (11930, 18104)]