80957120

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8161}}^1$

素因数の和:8209

約数の個数: 56

約数和(自身を含む): 199022208

約数和(自身を除く): 118065088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 8161, 9920, 16322, 32644, 40805, 65288, 81610, 130576, 163220, 252991, 261152, 326440, 505982, 522304, 652880, 1011964, 1264955, 1305760, 2023928, 2529910, 2611520, 4047856, 5059820, 8095712, 10119640, 16191424, 20239280, 40478560, 80957120]

約数ペア:

[(1, 80957120), (2, 40478560), (4, 20239280), (5, 16191424), (8, 10119640), (10, 8095712), (16, 5059820), (20, 4047856), (31, 2611520), (32, 2529910), (40, 2023928), (62, 1305760), (64, 1264955), (80, 1011964), (124, 652880), (155, 522304), (160, 505982), (248, 326440), (310, 261152), (320, 252991), (496, 163220), (620, 130576), (992, 81610), (1240, 65288), (1984, 40805), (2480, 32644), (4960, 16322), (8161, 9920)]