638324740

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:365

約数の個数: 96

約数和(自身を含む): 1424908800

約数和(自身を除く): 786584060

約数列:

[1, 2, 4, 5, 10, 20, 37, 61, 74, 79, 122, 148, 158, 179, 185, 244, 305, 316, 358, 370, 395, 610, 716, 740, 790, 895, 1220, 1580, 1790, 2257, 2923, 3580, 4514, 4819, 5846, 6623, 9028, 9638, 10919, 11285, 11692, 13246, 14141, 14615, 19276, 21838, 22570, 24095, 26492, 28282, 29230, 33115, 43676, 45140, 48190, 54595, 56564, 58460, 66230, 70705, 96380, 109190, 132460, 141410, 178303, 218380, 282820, 356606, 404003, 523217, 713212, 808006, 862601, 891515, 1046434, 1616012, 1725202, 1783030, 2020015, 2092868, 2616085, 3450404, 3566060, 4040030, 4313005, 5232170, 8080060, 8626010, 10464340, 17252020, 31916237, 63832474, 127664948, 159581185, 319162370, 638324740]

約数ペア:

[(1, 638324740), (2, 319162370), (4, 159581185), (5, 127664948), (10, 63832474), (20, 31916237), (37, 17252020), (61, 10464340), (74, 8626010), (79, 8080060), (122, 5232170), (148, 4313005), (158, 4040030), (179, 3566060), (185, 3450404), (244, 2616085), (305, 2092868), (316, 2020015), (358, 1783030), (370, 1725202), (395, 1616012), (610, 1046434), (716, 891515), (740, 862601), (790, 808006), (895, 713212), (1220, 523217), (1580, 404003), (1790, 356606), (2257, 282820), (2923, 218380), (3580, 178303), (4514, 141410), (4819, 132460), (5846, 109190), (6623, 96380), (9028, 70705), (9638, 66230), (10919, 58460), (11285, 56564), (11692, 54595), (13246, 48190), (14141, 45140), (14615, 43676), (19276, 33115), (21838, 29230), (22570, 28282), (24095, 26492)]