818702960

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{1321}}^1$

素因数の和:1522

約数の個数: 80

約数和(自身を含む): 1951398912

約数和(自身を除く): 1132695952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 127, 244, 254, 305, 488, 508, 610, 635, 976, 1016, 1220, 1270, 1321, 2032, 2440, 2540, 2642, 4880, 5080, 5284, 6605, 7747, 10160, 10568, 13210, 15494, 21136, 26420, 30988, 38735, 52840, 61976, 77470, 80581, 105680, 123952, 154940, 161162, 167767, 309880, 322324, 335534, 402905, 619760, 644648, 671068, 805810, 838835, 1289296, 1342136, 1611620, 1677670, 2684272, 3223240, 3355340, 6446480, 6710680, 10233787, 13421360, 20467574, 40935148, 51168935, 81870296, 102337870, 163740592, 204675740, 409351480, 818702960]

約数ペア:

[(1, 818702960), (2, 409351480), (4, 204675740), (5, 163740592), (8, 102337870), (10, 81870296), (16, 51168935), (20, 40935148), (40, 20467574), (61, 13421360), (80, 10233787), (122, 6710680), (127, 6446480), (244, 3355340), (254, 3223240), (305, 2684272), (488, 1677670), (508, 1611620), (610, 1342136), (635, 1289296), (976, 838835), (1016, 805810), (1220, 671068), (1270, 644648), (1321, 619760), (2032, 402905), (2440, 335534), (2540, 322324), (2642, 309880), (4880, 167767), (5080, 161162), (5284, 154940), (6605, 123952), (7747, 105680), (10160, 80581), (10568, 77470), (13210, 61976), (15494, 52840), (21136, 38735), (26420, 30988)]