19590520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 46980000

約数和(自身を除く): 27389480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 173, 190, 298, 346, 380, 596, 692, 745, 760, 865, 1192, 1384, 1490, 1730, 2831, 2980, 3287, 3460, 5662, 5960, 6574, 6920, 11324, 13148, 14155, 16435, 22648, 25777, 26296, 28310, 32870, 51554, 56620, 65740, 103108, 113240, 128885, 131480, 206216, 257770, 489763, 515540, 979526, 1031080, 1959052, 2448815, 3918104, 4897630, 9795260, 19590520]

約数ペア:

[(1, 19590520), (2, 9795260), (4, 4897630), (5, 3918104), (8, 2448815), (10, 1959052), (19, 1031080), (20, 979526), (38, 515540), (40, 489763), (76, 257770), (95, 206216), (149, 131480), (152, 128885), (173, 113240), (190, 103108), (298, 65740), (346, 56620), (380, 51554), (596, 32870), (692, 28310), (745, 26296), (760, 25777), (865, 22648), (1192, 16435), (1384, 14155), (1490, 13148), (1730, 11324), (2831, 6920), (2980, 6574), (3287, 5960), (3460, 5662)]