721240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:116

約数の個数: 64

約数和(自身を含む): 1864800

約数和(自身を除く): 1143560

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 73, 76, 95, 104, 130, 146, 152, 190, 247, 260, 292, 365, 380, 494, 520, 584, 730, 760, 949, 988, 1235, 1387, 1460, 1898, 1976, 2470, 2774, 2920, 3796, 4745, 4940, 5548, 6935, 7592, 9490, 9880, 11096, 13870, 18031, 18980, 27740, 36062, 37960, 55480, 72124, 90155, 144248, 180310, 360620, 721240]

約数ペア:

[(1, 721240), (2, 360620), (4, 180310), (5, 144248), (8, 90155), (10, 72124), (13, 55480), (19, 37960), (20, 36062), (26, 27740), (38, 18980), (40, 18031), (52, 13870), (65, 11096), (73, 9880), (76, 9490), (95, 7592), (104, 6935), (130, 5548), (146, 4940), (152, 4745), (190, 3796), (247, 2920), (260, 2774), (292, 2470), (365, 1976), (380, 1898), (494, 1460), (520, 1387), (584, 1235), (730, 988), (760, 949)]