21848180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26051980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 155, 262, 269, 310, 524, 538, 620, 655, 1076, 1310, 1345, 2620, 2690, 4061, 5380, 8122, 8339, 16244, 16678, 20305, 33356, 35239, 40610, 41695, 70478, 81220, 83390, 140956, 166780, 176195, 352390, 704780, 1092409, 2184818, 4369636, 5462045, 10924090, 21848180]

約数ペア:

[(1, 21848180), (2, 10924090), (4, 5462045), (5, 4369636), (10, 2184818), (20, 1092409), (31, 704780), (62, 352390), (124, 176195), (131, 166780), (155, 140956), (262, 83390), (269, 81220), (310, 70478), (524, 41695), (538, 40610), (620, 35239), (655, 33356), (1076, 20305), (1310, 16678), (1345, 16244), (2620, 8339), (2690, 8122), (4061, 5380)]