128921240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{15877}}^1$

素因数の和:15924

約数の個数: 64

約数和(自身を含む): 342964800

約数和(自身を除く): 214043560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 4060, 8120, 15877, 31754, 63508, 79385, 111139, 127016, 158770, 222278, 317540, 444556, 460433, 555695, 635080, 889112, 920866, 1111390, 1841732, 2222780, 2302165, 3223031, 3683464, 4445560, 4604330, 6446062, 9208660, 12892124, 16115155, 18417320, 25784248, 32230310, 64460620, 128921240]

約数ペア:

[(1, 128921240), (2, 64460620), (4, 32230310), (5, 25784248), (7, 18417320), (8, 16115155), (10, 12892124), (14, 9208660), (20, 6446062), (28, 4604330), (29, 4445560), (35, 3683464), (40, 3223031), (56, 2302165), (58, 2222780), (70, 1841732), (116, 1111390), (140, 920866), (145, 889112), (203, 635080), (232, 555695), (280, 460433), (290, 444556), (406, 317540), (580, 222278), (812, 158770), (1015, 127016), (1160, 111139), (1624, 79385), (2030, 63508), (4060, 31754), (8120, 15877)]