19178980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1231}}^1$

素因数の和:1300

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 24285980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1231, 1558, 2462, 3116, 3895, 4924, 6155, 7790, 12310, 15580, 23389, 24620, 46778, 50471, 93556, 100942, 116945, 201884, 233890, 252355, 467780, 504710, 958949, 1009420, 1917898, 3835796, 4794745, 9589490, 19178980]

約数ペア:

[(1, 19178980), (2, 9589490), (4, 4794745), (5, 3835796), (10, 1917898), (19, 1009420), (20, 958949), (38, 504710), (41, 467780), (76, 252355), (82, 233890), (95, 201884), (164, 116945), (190, 100942), (205, 93556), (380, 50471), (410, 46778), (779, 24620), (820, 23389), (1231, 15580), (1558, 12310), (2462, 7790), (3116, 6155), (3895, 4924)]