638498520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{161237}}^1$

素因数の和:161265

約数の個数: 96

約数和(自身を含む): 2263781520

約数和(自身を除く): 1625283000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 161237, 322474, 483711, 644948, 806185, 967422, 1289896, 1451133, 1612370, 1773607, 1934844, 2418555, 2902266, 3224740, 3547214, 3869688, 4837110, 5320821, 5804532, 6449480, 7094428, 7255665, 8868035, 9674220, 10641642, 11609064, 14188856, 14511330, 15962463, 17736070, 19348440, 21283284, 26604105, 29022660, 31924926, 35472140, 42566568, 53208210, 58045320, 63849852, 70944280, 79812315, 106416420, 127699704, 159624630, 212832840, 319249260, 638498520]

約数ペア:

[(1, 638498520), (2, 319249260), (3, 212832840), (4, 159624630), (5, 127699704), (6, 106416420), (8, 79812315), (9, 70944280), (10, 63849852), (11, 58045320), (12, 53208210), (15, 42566568), (18, 35472140), (20, 31924926), (22, 29022660), (24, 26604105), (30, 21283284), (33, 19348440), (36, 17736070), (40, 15962463), (44, 14511330), (45, 14188856), (55, 11609064), (60, 10641642), (66, 9674220), (72, 8868035), (88, 7255665), (90, 7094428), (99, 6449480), (110, 5804532), (120, 5320821), (132, 4837110), (165, 3869688), (180, 3547214), (198, 3224740), (220, 2902266), (264, 2418555), (330, 1934844), (360, 1773607), (396, 1612370), (440, 1451133), (495, 1289896), (660, 967422), (792, 806185), (990, 644948), (1320, 483711), (1980, 322474), (3960, 161237)]