42720040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1229}}^1$

素因数の和:1330

約数の個数: 64

約数和(自身を含む): 106272000

約数和(自身を除く): 63551960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 632, 790, 869, 1229, 1580, 1738, 2458, 3160, 3476, 4345, 4916, 6145, 6952, 8690, 9832, 12290, 13519, 17380, 24580, 27038, 34760, 49160, 54076, 67595, 97091, 108152, 135190, 194182, 270380, 388364, 485455, 540760, 776728, 970910, 1068001, 1941820, 2136002, 3883640, 4272004, 5340005, 8544008, 10680010, 21360020, 42720040]

約数ペア:

[(1, 42720040), (2, 21360020), (4, 10680010), (5, 8544008), (8, 5340005), (10, 4272004), (11, 3883640), (20, 2136002), (22, 1941820), (40, 1068001), (44, 970910), (55, 776728), (79, 540760), (88, 485455), (110, 388364), (158, 270380), (220, 194182), (316, 135190), (395, 108152), (440, 97091), (632, 67595), (790, 54076), (869, 49160), (1229, 34760), (1580, 27038), (1738, 24580), (2458, 17380), (3160, 13519), (3476, 12290), (4345, 9832), (4916, 8690), (6145, 6952)]