81684460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^5$

素因数の和:85

約数の個数: 72

約数和(自身を含む): 202725936

約数和(自身を除く): 121041476

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 169, 220, 260, 286, 338, 572, 676, 715, 845, 1430, 1690, 1859, 2197, 2860, 3380, 3718, 4394, 7436, 8788, 9295, 10985, 18590, 21970, 24167, 28561, 37180, 43940, 48334, 57122, 96668, 114244, 120835, 142805, 241670, 285610, 314171, 371293, 483340, 571220, 628342, 742586, 1256684, 1485172, 1570855, 1856465, 3141710, 3712930, 4084223, 6283420, 7425860, 8168446, 16336892, 20421115, 40842230, 81684460]

約数ペア:

[(1, 81684460), (2, 40842230), (4, 20421115), (5, 16336892), (10, 8168446), (11, 7425860), (13, 6283420), (20, 4084223), (22, 3712930), (26, 3141710), (44, 1856465), (52, 1570855), (55, 1485172), (65, 1256684), (110, 742586), (130, 628342), (143, 571220), (169, 483340), (220, 371293), (260, 314171), (286, 285610), (338, 241670), (572, 142805), (676, 120835), (715, 114244), (845, 96668), (1430, 57122), (1690, 48334), (1859, 43940), (2197, 37180), (2860, 28561), (3380, 24167), (3718, 21970), (4394, 18590), (7436, 10985), (8788, 9295)]