81361740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^2\times {\mathrm{269}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 231925680

約数和(自身を除く): 150563940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 269, 284, 355, 426, 538, 710, 807, 852, 1065, 1076, 1345, 1420, 1614, 2130, 2690, 3228, 4035, 4260, 5041, 5380, 8070, 10082, 15123, 16140, 19099, 20164, 25205, 30246, 38198, 50410, 57297, 60492, 75615, 76396, 95495, 100820, 114594, 151230, 190990, 229188, 286485, 302460, 381980, 572970, 1145940, 1356029, 2712058, 4068087, 5424116, 6780145, 8136174, 13560290, 16272348, 20340435, 27120580, 40680870, 81361740]

約数ペア:

[(1, 81361740), (2, 40680870), (3, 27120580), (4, 20340435), (5, 16272348), (6, 13560290), (10, 8136174), (12, 6780145), (15, 5424116), (20, 4068087), (30, 2712058), (60, 1356029), (71, 1145940), (142, 572970), (213, 381980), (269, 302460), (284, 286485), (355, 229188), (426, 190990), (538, 151230), (710, 114594), (807, 100820), (852, 95495), (1065, 76396), (1076, 75615), (1345, 60492), (1420, 57297), (1614, 50410), (2130, 38198), (2690, 30246), (3228, 25205), (4035, 20164), (4260, 19099), (5041, 16140), (5380, 15123), (8070, 10082)]