28856660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 73328640

約数和(自身を除く): 44471980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 61, 62, 70, 109, 122, 124, 140, 155, 217, 218, 244, 305, 310, 427, 434, 436, 545, 610, 620, 763, 854, 868, 1085, 1090, 1220, 1526, 1708, 1891, 2135, 2170, 2180, 3052, 3379, 3782, 3815, 4270, 4340, 6649, 6758, 7564, 7630, 8540, 9455, 13237, 13298, 13516, 15260, 16895, 18910, 23653, 26474, 26596, 33245, 33790, 37820, 46543, 47306, 52948, 66185, 66490, 67580, 93086, 94612, 118265, 132370, 132980, 186172, 206119, 232715, 236530, 264740, 412238, 465430, 473060, 824476, 930860, 1030595, 1442833, 2061190, 2885666, 4122380, 5771332, 7214165, 14428330, 28856660]

約数ペア:

[(1, 28856660), (2, 14428330), (4, 7214165), (5, 5771332), (7, 4122380), (10, 2885666), (14, 2061190), (20, 1442833), (28, 1030595), (31, 930860), (35, 824476), (61, 473060), (62, 465430), (70, 412238), (109, 264740), (122, 236530), (124, 232715), (140, 206119), (155, 186172), (217, 132980), (218, 132370), (244, 118265), (305, 94612), (310, 93086), (427, 67580), (434, 66490), (436, 66185), (545, 52948), (610, 47306), (620, 46543), (763, 37820), (854, 33790), (868, 33245), (1085, 26596), (1090, 26474), (1220, 23653), (1526, 18910), (1708, 16895), (1891, 15260), (2135, 13516), (2170, 13298), (2180, 13237), (3052, 9455), (3379, 8540), (3782, 7630), (3815, 7564), (4270, 6758), (4340, 6649)]