199984840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7451}}^1$

素因数の和:7534

約数の個数: 64

約数和(自身を含む): 498985920

約数和(自身を除く): 299001080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2684, 3355, 5368, 6710, 7451, 13420, 14902, 26840, 29804, 37255, 59608, 74510, 81961, 149020, 163922, 298040, 327844, 409805, 454511, 655688, 819610, 909022, 1639220, 1818044, 2272555, 3278440, 3636088, 4545110, 4999621, 9090220, 9999242, 18180440, 19998484, 24998105, 39996968, 49996210, 99992420, 199984840]

約数ペア:

[(1, 199984840), (2, 99992420), (4, 49996210), (5, 39996968), (8, 24998105), (10, 19998484), (11, 18180440), (20, 9999242), (22, 9090220), (40, 4999621), (44, 4545110), (55, 3636088), (61, 3278440), (88, 2272555), (110, 1818044), (122, 1639220), (220, 909022), (244, 819610), (305, 655688), (440, 454511), (488, 409805), (610, 327844), (671, 298040), (1220, 163922), (1342, 149020), (2440, 81961), (2684, 74510), (3355, 59608), (5368, 37255), (6710, 29804), (7451, 26840), (13420, 14902)]