19894550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 40330752

約数和(自身を除く): 20436202

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 127, 130, 241, 254, 325, 482, 635, 650, 1205, 1270, 1651, 2410, 3133, 3175, 3302, 6025, 6266, 6350, 8255, 12050, 15665, 16510, 30607, 31330, 41275, 61214, 78325, 82550, 153035, 156650, 306070, 397891, 765175, 795782, 1530350, 1989455, 3978910, 9947275, 19894550]

約数ペア:

[(1, 19894550), (2, 9947275), (5, 3978910), (10, 1989455), (13, 1530350), (25, 795782), (26, 765175), (50, 397891), (65, 306070), (127, 156650), (130, 153035), (241, 82550), (254, 78325), (325, 61214), (482, 41275), (635, 31330), (650, 30607), (1205, 16510), (1270, 15665), (1651, 12050), (2410, 8255), (3133, 6350), (3175, 6266), (3302, 6025)]