638365120

素因数分解:

$2^6\times 5^1\times {\mathrm{797}}^1\times {\mathrm{2503}}^1$

素因数の和:3317

約数の個数: 56

約数和(自身を含む): 1522622304

約数和(自身を除く): 884257184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 797, 1594, 2503, 3188, 3985, 5006, 6376, 7970, 10012, 12515, 12752, 15940, 20024, 25030, 25504, 31880, 40048, 50060, 51008, 63760, 80096, 100120, 127520, 160192, 200240, 255040, 400480, 800960, 1994891, 3989782, 7979564, 9974455, 15959128, 19948910, 31918256, 39897820, 63836512, 79795640, 127673024, 159591280, 319182560, 638365120]

約数ペア:

[(1, 638365120), (2, 319182560), (4, 159591280), (5, 127673024), (8, 79795640), (10, 63836512), (16, 39897820), (20, 31918256), (32, 19948910), (40, 15959128), (64, 9974455), (80, 7979564), (160, 3989782), (320, 1994891), (797, 800960), (1594, 400480), (2503, 255040), (3188, 200240), (3985, 160192), (5006, 127520), (6376, 100120), (7970, 80096), (10012, 63760), (12515, 51008), (12752, 50060), (15940, 40048), (20024, 31880), (25030, 25504)]