21315678

素因数分解:

$2^1\times 3^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1\times {\mathrm{223}}^1$

素因数の和:496

約数の個数: 32

約数和(自身を含む): 43545600

約数和(自身を除く): 22229922

約数列:

[1, 2, 3, 6, 89, 178, 179, 223, 267, 358, 446, 534, 537, 669, 1074, 1338, 15931, 19847, 31862, 39694, 39917, 47793, 59541, 79834, 95586, 119082, 119751, 239502, 3552613, 7105226, 10657839, 21315678]

約数ペア:

[(1, 21315678), (2, 10657839), (3, 7105226), (6, 3552613), (89, 239502), (178, 119751), (179, 119082), (223, 95586), (267, 79834), (358, 59541), (446, 47793), (534, 39917), (537, 39694), (669, 31862), (1074, 19847), (1338, 15931)]