161807420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:427

約数の個数: 72

約数和(自身を含む): 364717584

約数和(自身を除く): 202910164

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 146, 190, 292, 307, 361, 365, 380, 614, 722, 730, 1228, 1387, 1444, 1460, 1535, 1805, 2774, 3070, 3610, 5548, 5833, 6140, 6935, 7220, 11666, 13870, 22411, 23332, 26353, 27740, 29165, 44822, 52706, 58330, 89644, 105412, 110827, 112055, 116660, 131765, 221654, 224110, 263530, 425809, 443308, 448220, 527060, 554135, 851618, 1108270, 1703236, 2129045, 2216540, 4258090, 8090371, 8516180, 16180742, 32361484, 40451855, 80903710, 161807420]

約数ペア:

[(1, 161807420), (2, 80903710), (4, 40451855), (5, 32361484), (10, 16180742), (19, 8516180), (20, 8090371), (38, 4258090), (73, 2216540), (76, 2129045), (95, 1703236), (146, 1108270), (190, 851618), (292, 554135), (307, 527060), (361, 448220), (365, 443308), (380, 425809), (614, 263530), (722, 224110), (730, 221654), (1228, 131765), (1387, 116660), (1444, 112055), (1460, 110827), (1535, 105412), (1805, 89644), (2774, 58330), (3070, 52706), (3610, 44822), (5548, 29165), (5833, 27740), (6140, 26353), (6935, 23332), (7220, 22411), (11666, 13870)]