25479220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{53}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 60106536

約数和(自身を除く): 34627316

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 53, 65, 86, 106, 130, 172, 212, 215, 260, 265, 430, 530, 559, 689, 860, 1060, 1118, 1378, 1849, 2236, 2279, 2756, 2795, 3445, 3698, 4558, 5590, 6890, 7396, 9116, 9245, 11180, 11395, 13780, 18490, 22790, 24037, 29627, 36980, 45580, 48074, 59254, 96148, 97997, 118508, 120185, 148135, 195994, 240370, 296270, 391988, 480740, 489985, 592540, 979970, 1273961, 1959940, 2547922, 5095844, 6369805, 12739610, 25479220]

約数ペア:

[(1, 25479220), (2, 12739610), (4, 6369805), (5, 5095844), (10, 2547922), (13, 1959940), (20, 1273961), (26, 979970), (43, 592540), (52, 489985), (53, 480740), (65, 391988), (86, 296270), (106, 240370), (130, 195994), (172, 148135), (212, 120185), (215, 118508), (260, 97997), (265, 96148), (430, 59254), (530, 48074), (559, 45580), (689, 36980), (860, 29627), (1060, 24037), (1118, 22790), (1378, 18490), (1849, 13780), (2236, 11395), (2279, 11180), (2756, 9245), (2795, 9116), (3445, 7396), (3698, 6890), (4558, 5590)]