12905920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1301}}^1$

素因数の和:1349

約数の個数: 56

約数和(自身を含む): 31747968

約数和(自身を除く): 18842048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1301, 1984, 2480, 2602, 4960, 5204, 6505, 9920, 10408, 13010, 20816, 26020, 40331, 41632, 52040, 80662, 83264, 104080, 161324, 201655, 208160, 322648, 403310, 416320, 645296, 806620, 1290592, 1613240, 2581184, 3226480, 6452960, 12905920]

約数ペア:

[(1, 12905920), (2, 6452960), (4, 3226480), (5, 2581184), (8, 1613240), (10, 1290592), (16, 806620), (20, 645296), (31, 416320), (32, 403310), (40, 322648), (62, 208160), (64, 201655), (80, 161324), (124, 104080), (155, 83264), (160, 80662), (248, 52040), (310, 41632), (320, 40331), (496, 26020), (620, 20816), (992, 13010), (1240, 10408), (1301, 9920), (1984, 6505), (2480, 5204), (2602, 4960)]