21131730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3307}}^1$

素因数の和:3391

約数の個数: 48

約数和(自身を含む): 55733184

約数和(自身を除く): 34601454

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 3307, 6390, 6614, 9921, 16535, 19842, 29763, 33070, 49605, 59526, 99210, 148815, 234797, 297630, 469594, 704391, 1173985, 1408782, 2113173, 2347970, 3521955, 4226346, 7043910, 10565865, 21131730]

約数ペア:

[(1, 21131730), (2, 10565865), (3, 7043910), (5, 4226346), (6, 3521955), (9, 2347970), (10, 2113173), (15, 1408782), (18, 1173985), (30, 704391), (45, 469594), (71, 297630), (90, 234797), (142, 148815), (213, 99210), (355, 59526), (426, 49605), (639, 33070), (710, 29763), (1065, 19842), (1278, 16535), (2130, 9921), (3195, 6614), (3307, 6390)]