81425260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4373}}^1$

素因数の和:4415

約数の個数: 72

約数和(自身を含む): 209427120

約数和(自身を除く): 128001860

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4373, 4655, 8746, 9310, 17492, 18620, 21865, 30611, 43730, 61222, 83087, 87460, 122444, 153055, 166174, 214277, 306110, 332348, 415435, 428554, 581609, 612220, 830870, 857108, 1071385, 1163218, 1661740, 2142770, 2326436, 2908045, 4071263, 4285540, 5816090, 8142526, 11632180, 16285052, 20356315, 40712630, 81425260]

約数ペア:

[(1, 81425260), (2, 40712630), (4, 20356315), (5, 16285052), (7, 11632180), (10, 8142526), (14, 5816090), (19, 4285540), (20, 4071263), (28, 2908045), (35, 2326436), (38, 2142770), (49, 1661740), (70, 1163218), (76, 1071385), (95, 857108), (98, 830870), (133, 612220), (140, 581609), (190, 428554), (196, 415435), (245, 332348), (266, 306110), (380, 214277), (490, 166174), (532, 153055), (665, 122444), (931, 87460), (980, 83087), (1330, 61222), (1862, 43730), (2660, 30611), (3724, 21865), (4373, 18620), (4655, 17492), (8746, 9310)]