390386720

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{78707}}^1$

素因数の和:78753

約数の個数: 48

約数和(自身を含む): 952051968

約数和(自身を除く): 561665248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 78707, 157414, 314828, 393535, 629656, 787070, 1259312, 1574140, 2439917, 2518624, 3148280, 4879834, 6296560, 9759668, 12199585, 12593120, 19519336, 24399170, 39038672, 48798340, 78077344, 97596680, 195193360, 390386720]

約数ペア:

[(1, 390386720), (2, 195193360), (4, 97596680), (5, 78077344), (8, 48798340), (10, 39038672), (16, 24399170), (20, 19519336), (31, 12593120), (32, 12199585), (40, 9759668), (62, 6296560), (80, 4879834), (124, 3148280), (155, 2518624), (160, 2439917), (248, 1574140), (310, 1259312), (496, 787070), (620, 629656), (992, 393535), (1240, 314828), (2480, 157414), (4960, 78707)]