281361280

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7207}}^1$

素因数の和:7287

約数の個数: 64

約数和(自身を含む): 683750880

約数和(自身を除く): 402389600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 2440, 3904, 4880, 7207, 7808, 9760, 14414, 19520, 28828, 36035, 39040, 57656, 72070, 115312, 144140, 230624, 288280, 439627, 461248, 576560, 879254, 922496, 1153120, 1758508, 2198135, 2306240, 3517016, 4396270, 4612480, 7034032, 8792540, 14068064, 17585080, 28136128, 35170160, 56272256, 70340320, 140680640, 281361280]

約数ペア:

[(1, 281361280), (2, 140680640), (4, 70340320), (5, 56272256), (8, 35170160), (10, 28136128), (16, 17585080), (20, 14068064), (32, 8792540), (40, 7034032), (61, 4612480), (64, 4396270), (80, 3517016), (122, 2306240), (128, 2198135), (160, 1758508), (244, 1153120), (305, 922496), (320, 879254), (488, 576560), (610, 461248), (640, 439627), (976, 288280), (1220, 230624), (1952, 144140), (2440, 115312), (3904, 72070), (4880, 57656), (7207, 39040), (7808, 36035), (9760, 28828), (14414, 19520)]