38871640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 90396000

約数和(自身を除く): 51524360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 89, 122, 178, 179, 244, 305, 356, 358, 445, 488, 610, 712, 716, 890, 895, 1220, 1432, 1780, 1790, 2440, 3560, 3580, 5429, 7160, 10858, 10919, 15931, 21716, 21838, 27145, 31862, 43432, 43676, 54290, 54595, 63724, 79655, 87352, 108580, 109190, 127448, 159310, 217160, 218380, 318620, 436760, 637240, 971791, 1943582, 3887164, 4858955, 7774328, 9717910, 19435820, 38871640]

約数ペア:

[(1, 38871640), (2, 19435820), (4, 9717910), (5, 7774328), (8, 4858955), (10, 3887164), (20, 1943582), (40, 971791), (61, 637240), (89, 436760), (122, 318620), (178, 218380), (179, 217160), (244, 159310), (305, 127448), (356, 109190), (358, 108580), (445, 87352), (488, 79655), (610, 63724), (712, 54595), (716, 54290), (890, 43676), (895, 43432), (1220, 31862), (1432, 27145), (1780, 21838), (1790, 21716), (2440, 15931), (3560, 10919), (3580, 10858), (5429, 7160)]