81990040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{6011}}^1$

素因数の和:6064

約数の個数: 64

約数和(自身を含む): 207774720

約数和(自身を除く): 125784680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2728, 3410, 6011, 6820, 12022, 13640, 24044, 30055, 48088, 60110, 66121, 120220, 132242, 186341, 240440, 264484, 330605, 372682, 528968, 661210, 745364, 931705, 1322420, 1490728, 1863410, 2049751, 2644840, 3726820, 4099502, 7453640, 8199004, 10248755, 16398008, 20497510, 40995020, 81990040]

約数ペア:

[(1, 81990040), (2, 40995020), (4, 20497510), (5, 16398008), (8, 10248755), (10, 8199004), (11, 7453640), (20, 4099502), (22, 3726820), (31, 2644840), (40, 2049751), (44, 1863410), (55, 1490728), (62, 1322420), (88, 931705), (110, 745364), (124, 661210), (155, 528968), (220, 372682), (248, 330605), (310, 264484), (341, 240440), (440, 186341), (620, 132242), (682, 120220), (1240, 66121), (1364, 60110), (1705, 48088), (2728, 30055), (3410, 24044), (6011, 13640), (6820, 12022)]