81326720

素因数分解:

$2^7\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1531}}^1$

素因数の和:1633

約数の個数: 64

約数和(自身を含む): 196892640

約数和(自身を除く): 115565920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 320, 332, 415, 640, 664, 830, 1328, 1531, 1660, 2656, 3062, 3320, 5312, 6124, 6640, 7655, 10624, 12248, 13280, 15310, 24496, 26560, 30620, 48992, 53120, 61240, 97984, 122480, 127073, 195968, 244960, 254146, 489920, 508292, 635365, 979840, 1016584, 1270730, 2033168, 2541460, 4066336, 5082920, 8132672, 10165840, 16265344, 20331680, 40663360, 81326720]

約数ペア:

[(1, 81326720), (2, 40663360), (4, 20331680), (5, 16265344), (8, 10165840), (10, 8132672), (16, 5082920), (20, 4066336), (32, 2541460), (40, 2033168), (64, 1270730), (80, 1016584), (83, 979840), (128, 635365), (160, 508292), (166, 489920), (320, 254146), (332, 244960), (415, 195968), (640, 127073), (664, 122480), (830, 97984), (1328, 61240), (1531, 53120), (1660, 48992), (2656, 30620), (3062, 26560), (3320, 24496), (5312, 15310), (6124, 13280), (6640, 12248), (7655, 10624)]