278748652

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3529}}^1$

素因数の和:3591

約数の個数: 72

約数和(自身を含む): 630994560

約数和(自身を除く): 352245908

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 49, 52, 62, 91, 98, 124, 182, 196, 217, 364, 403, 434, 637, 806, 868, 1274, 1519, 1612, 2548, 2821, 3038, 3529, 5642, 6076, 7058, 11284, 14116, 19747, 24703, 39494, 45877, 49406, 78988, 91754, 98812, 109399, 172921, 183508, 218798, 321139, 345842, 437596, 642278, 691684, 765793, 1284556, 1422187, 1531586, 2247973, 2844374, 3063172, 4495946, 5360551, 5688748, 8991892, 9955309, 10721102, 19910618, 21442204, 39821236, 69687163, 139374326, 278748652]

約数ペア:

[(1, 278748652), (2, 139374326), (4, 69687163), (7, 39821236), (13, 21442204), (14, 19910618), (26, 10721102), (28, 9955309), (31, 8991892), (49, 5688748), (52, 5360551), (62, 4495946), (91, 3063172), (98, 2844374), (124, 2247973), (182, 1531586), (196, 1422187), (217, 1284556), (364, 765793), (403, 691684), (434, 642278), (637, 437596), (806, 345842), (868, 321139), (1274, 218798), (1519, 183508), (1612, 172921), (2548, 109399), (2821, 98812), (3038, 91754), (3529, 78988), (5642, 49406), (6076, 45877), (7058, 39494), (11284, 24703), (14116, 19747)]