51665840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:378

約数の個数: 80

約数和(自身を含む): 125991936

約数和(自身を除く): 74326096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 83, 124, 155, 166, 248, 251, 310, 332, 415, 496, 502, 620, 664, 830, 1004, 1240, 1255, 1328, 1660, 2008, 2480, 2510, 2573, 3320, 4016, 5020, 5146, 6640, 7781, 10040, 10292, 12865, 15562, 20080, 20584, 20833, 25730, 31124, 38905, 41168, 41666, 51460, 62248, 77810, 83332, 102920, 104165, 124496, 155620, 166664, 205840, 208330, 311240, 333328, 416660, 622480, 645823, 833320, 1291646, 1666640, 2583292, 3229115, 5166584, 6458230, 10333168, 12916460, 25832920, 51665840]

約数ペア:

[(1, 51665840), (2, 25832920), (4, 12916460), (5, 10333168), (8, 6458230), (10, 5166584), (16, 3229115), (20, 2583292), (31, 1666640), (40, 1291646), (62, 833320), (80, 645823), (83, 622480), (124, 416660), (155, 333328), (166, 311240), (248, 208330), (251, 205840), (310, 166664), (332, 155620), (415, 124496), (496, 104165), (502, 102920), (620, 83332), (664, 77810), (830, 62248), (1004, 51460), (1240, 41666), (1255, 41168), (1328, 38905), (1660, 31124), (2008, 25730), (2480, 20833), (2510, 20584), (2573, 20080), (3320, 15562), (4016, 12865), (5020, 10292), (5146, 10040), (6640, 7781)]