81361420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{419}}^1$

素因数の和:527

約数の個数: 96

約数和(自身を含む): 208857600

約数和(自身を除く): 127496180

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 73, 76, 95, 133, 140, 146, 190, 266, 292, 365, 380, 419, 511, 532, 665, 730, 838, 1022, 1330, 1387, 1460, 1676, 2044, 2095, 2555, 2660, 2774, 2933, 4190, 5110, 5548, 5866, 6935, 7961, 8380, 9709, 10220, 11732, 13870, 14665, 15922, 19418, 27740, 29330, 30587, 31844, 38836, 39805, 48545, 55727, 58660, 61174, 79610, 97090, 111454, 122348, 152935, 159220, 194180, 214109, 222908, 278635, 305870, 428218, 557270, 581153, 611740, 856436, 1070545, 1114540, 1162306, 2141090, 2324612, 2905765, 4068071, 4282180, 5811530, 8136142, 11623060, 16272284, 20340355, 40680710, 81361420]

約数ペア:

[(1, 81361420), (2, 40680710), (4, 20340355), (5, 16272284), (7, 11623060), (10, 8136142), (14, 5811530), (19, 4282180), (20, 4068071), (28, 2905765), (35, 2324612), (38, 2141090), (70, 1162306), (73, 1114540), (76, 1070545), (95, 856436), (133, 611740), (140, 581153), (146, 557270), (190, 428218), (266, 305870), (292, 278635), (365, 222908), (380, 214109), (419, 194180), (511, 159220), (532, 152935), (665, 122348), (730, 111454), (838, 97090), (1022, 79610), (1330, 61174), (1387, 58660), (1460, 55727), (1676, 48545), (2044, 39805), (2095, 38836), (2555, 31844), (2660, 30587), (2774, 29330), (2933, 27740), (4190, 19418), (5110, 15922), (5548, 14665), (5866, 13870), (6935, 11732), (7961, 10220), (8380, 9709)]