51780020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{419}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 112613760

約数和(自身を除く): 60833740

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 167, 185, 334, 370, 419, 668, 740, 835, 838, 1670, 1676, 2095, 3340, 4190, 6179, 8380, 12358, 15503, 24716, 30895, 31006, 61790, 62012, 69973, 77515, 123580, 139946, 155030, 279892, 310060, 349865, 699730, 1399460, 2589001, 5178002, 10356004, 12945005, 25890010, 51780020]

約数ペア:

[(1, 51780020), (2, 25890010), (4, 12945005), (5, 10356004), (10, 5178002), (20, 2589001), (37, 1399460), (74, 699730), (148, 349865), (167, 310060), (185, 279892), (334, 155030), (370, 139946), (419, 123580), (668, 77515), (740, 69973), (835, 62012), (838, 61790), (1670, 31006), (1676, 30895), (2095, 24716), (3340, 15503), (4190, 12358), (6179, 8380)]