8173420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 18315360

約数和(自身を除く): 10141940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 157, 190, 274, 314, 380, 548, 628, 685, 785, 1370, 1570, 2603, 2740, 2983, 3140, 5206, 5966, 10412, 11932, 13015, 14915, 21509, 26030, 29830, 43018, 52060, 59660, 86036, 107545, 215090, 408671, 430180, 817342, 1634684, 2043355, 4086710, 8173420]

約数ペア:

[(1, 8173420), (2, 4086710), (4, 2043355), (5, 1634684), (10, 817342), (19, 430180), (20, 408671), (38, 215090), (76, 107545), (95, 86036), (137, 59660), (157, 52060), (190, 43018), (274, 29830), (314, 26030), (380, 21509), (548, 14915), (628, 13015), (685, 11932), (785, 10412), (1370, 5966), (1570, 5206), (2603, 3140), (2740, 2983)]