81190640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59699}}^1$

素因数の和:59729

約数の個数: 40

約数和(自身を含む): 199875600

約数和(自身を除く): 118684960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 59699, 119398, 238796, 298495, 477592, 596990, 955184, 1014883, 1193980, 2029766, 2387960, 4059532, 4775920, 5074415, 8119064, 10148830, 16238128, 20297660, 40595320, 81190640]

約数ペア:

[(1, 81190640), (2, 40595320), (4, 20297660), (5, 16238128), (8, 10148830), (10, 8119064), (16, 5074415), (17, 4775920), (20, 4059532), (34, 2387960), (40, 2029766), (68, 1193980), (80, 1014883), (85, 955184), (136, 596990), (170, 477592), (272, 298495), (340, 238796), (680, 119398), (1360, 59699)]