19037720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1181}}^1$

素因数の和:1236

約数の個数: 64

約数和(自身を含む): 47658240

約数和(自身を除く): 28620520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1181, 1240, 1612, 2015, 2362, 3224, 4030, 4724, 5905, 8060, 9448, 11810, 15353, 16120, 23620, 30706, 36611, 47240, 61412, 73222, 76765, 122824, 146444, 153530, 183055, 292888, 307060, 366110, 475943, 614120, 732220, 951886, 1464440, 1903772, 2379715, 3807544, 4759430, 9518860, 19037720]

約数ペア:

[(1, 19037720), (2, 9518860), (4, 4759430), (5, 3807544), (8, 2379715), (10, 1903772), (13, 1464440), (20, 951886), (26, 732220), (31, 614120), (40, 475943), (52, 366110), (62, 307060), (65, 292888), (104, 183055), (124, 153530), (130, 146444), (155, 122824), (248, 76765), (260, 73222), (310, 61412), (403, 47240), (520, 36611), (620, 30706), (806, 23620), (1181, 16120), (1240, 15353), (1612, 11810), (2015, 9448), (2362, 8060), (3224, 5905), (4030, 4724)]