128572720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39199}}^1$

素因数の和:39253

約数の個数: 40

約数和(自身を含む): 306230400

約数和(自身を除く): 177657680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 39199, 78398, 156796, 195995, 313592, 391990, 627184, 783980, 1567960, 1607159, 3135920, 3214318, 6428636, 8035795, 12857272, 16071590, 25714544, 32143180, 64286360, 128572720]

約数ペア:

[(1, 128572720), (2, 64286360), (4, 32143180), (5, 25714544), (8, 16071590), (10, 12857272), (16, 8035795), (20, 6428636), (40, 3214318), (41, 3135920), (80, 1607159), (82, 1567960), (164, 783980), (205, 627184), (328, 391990), (410, 313592), (656, 195995), (820, 156796), (1640, 78398), (3280, 39199)]