21911560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2662

約数の個数: 64

約数和(自身を含む): 56635200

約数和(自身を除く): 34723640

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2621, 4180, 5242, 8360, 10484, 13105, 20968, 26210, 28831, 49799, 52420, 57662, 99598, 104840, 115324, 144155, 199196, 230648, 248995, 288310, 398392, 497990, 547789, 576620, 995980, 1095578, 1153240, 1991960, 2191156, 2738945, 4382312, 5477890, 10955780, 21911560]

約数ペア:

[(1, 21911560), (2, 10955780), (4, 5477890), (5, 4382312), (8, 2738945), (10, 2191156), (11, 1991960), (19, 1153240), (20, 1095578), (22, 995980), (38, 576620), (40, 547789), (44, 497990), (55, 398392), (76, 288310), (88, 248995), (95, 230648), (110, 199196), (152, 144155), (190, 115324), (209, 104840), (220, 99598), (380, 57662), (418, 52420), (440, 49799), (760, 28831), (836, 26210), (1045, 20968), (1672, 13105), (2090, 10484), (2621, 8360), (4180, 5242)]