20478480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7757}}^1$

素因数の和:7784

約数の個数: 80

約数和(自身を含む): 69263424

約数和(自身を除く): 48784944

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 7757, 15514, 23271, 31028, 38785, 46542, 62056, 77570, 85327, 93084, 116355, 124112, 155140, 170654, 186168, 232710, 255981, 310280, 341308, 372336, 426635, 465420, 511962, 620560, 682616, 853270, 930840, 1023924, 1279905, 1365232, 1706540, 1861680, 2047848, 2559810, 3413080, 4095696, 5119620, 6826160, 10239240, 20478480]

約数ペア:

[(1, 20478480), (2, 10239240), (3, 6826160), (4, 5119620), (5, 4095696), (6, 3413080), (8, 2559810), (10, 2047848), (11, 1861680), (12, 1706540), (15, 1365232), (16, 1279905), (20, 1023924), (22, 930840), (24, 853270), (30, 682616), (33, 620560), (40, 511962), (44, 465420), (48, 426635), (55, 372336), (60, 341308), (66, 310280), (80, 255981), (88, 232710), (110, 186168), (120, 170654), (132, 155140), (165, 124112), (176, 116355), (220, 93084), (240, 85327), (264, 77570), (330, 62056), (440, 46542), (528, 38785), (660, 31028), (880, 23271), (1320, 15514), (2640, 7757)]