78019720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{421}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 181848240

約数和(自身を除く): 103828520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 113, 164, 205, 226, 328, 410, 421, 452, 565, 820, 842, 904, 1130, 1640, 1684, 2105, 2260, 3368, 4210, 4520, 4633, 8420, 9266, 16840, 17261, 18532, 23165, 34522, 37064, 46330, 47573, 69044, 86305, 92660, 95146, 138088, 172610, 185320, 190292, 237865, 345220, 380584, 475730, 690440, 951460, 1902920, 1950493, 3900986, 7801972, 9752465, 15603944, 19504930, 39009860, 78019720]

約数ペア:

[(1, 78019720), (2, 39009860), (4, 19504930), (5, 15603944), (8, 9752465), (10, 7801972), (20, 3900986), (40, 1950493), (41, 1902920), (82, 951460), (113, 690440), (164, 475730), (205, 380584), (226, 345220), (328, 237865), (410, 190292), (421, 185320), (452, 172610), (565, 138088), (820, 95146), (842, 92660), (904, 86305), (1130, 69044), (1640, 47573), (1684, 46330), (2105, 37064), (2260, 34522), (3368, 23165), (4210, 18532), (4520, 17261), (4633, 16840), (8420, 9266)]