25811840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1301}}^1$

素因数の和:1351

約数の個数: 64

約数和(自身を含む): 63745920

約数和(自身を除く): 37934080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1301, 1984, 2480, 2602, 3968, 4960, 5204, 6505, 9920, 10408, 13010, 19840, 20816, 26020, 40331, 41632, 52040, 80662, 83264, 104080, 161324, 166528, 201655, 208160, 322648, 403310, 416320, 645296, 806620, 832640, 1290592, 1613240, 2581184, 3226480, 5162368, 6452960, 12905920, 25811840]

約数ペア:

[(1, 25811840), (2, 12905920), (4, 6452960), (5, 5162368), (8, 3226480), (10, 2581184), (16, 1613240), (20, 1290592), (31, 832640), (32, 806620), (40, 645296), (62, 416320), (64, 403310), (80, 322648), (124, 208160), (128, 201655), (155, 166528), (160, 161324), (248, 104080), (310, 83264), (320, 80662), (496, 52040), (620, 41632), (640, 40331), (992, 26020), (1240, 20816), (1301, 19840), (1984, 13010), (2480, 10408), (2602, 9920), (3968, 6505), (4960, 5204)]