29991260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 71180928

約数和(自身を除く): 41189668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 61, 62, 65, 122, 124, 130, 155, 244, 260, 305, 310, 403, 610, 620, 793, 806, 1220, 1586, 1612, 1891, 2015, 3172, 3721, 3782, 3965, 4030, 7442, 7564, 7930, 8060, 9455, 14884, 15860, 18605, 18910, 24583, 37210, 37820, 48373, 49166, 74420, 96746, 98332, 115351, 122915, 193492, 230702, 241865, 245830, 461404, 483730, 491660, 576755, 967460, 1153510, 1499563, 2307020, 2999126, 5998252, 7497815, 14995630, 29991260]

約数ペア:

[(1, 29991260), (2, 14995630), (4, 7497815), (5, 5998252), (10, 2999126), (13, 2307020), (20, 1499563), (26, 1153510), (31, 967460), (52, 576755), (61, 491660), (62, 483730), (65, 461404), (122, 245830), (124, 241865), (130, 230702), (155, 193492), (244, 122915), (260, 115351), (305, 98332), (310, 96746), (403, 74420), (610, 49166), (620, 48373), (793, 37820), (806, 37210), (1220, 24583), (1586, 18910), (1612, 18605), (1891, 15860), (2015, 14884), (3172, 9455), (3721, 8060), (3782, 7930), (3965, 7564), (4030, 7442)]