21414978

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 72

約数和(自身を含む): 52537212

約数和(自身を除く): 31122234

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 39, 46, 69, 78, 117, 138, 173, 207, 234, 299, 346, 414, 519, 529, 598, 897, 1038, 1058, 1557, 1587, 1794, 2249, 2691, 3114, 3174, 3979, 4498, 4761, 5382, 6747, 6877, 7958, 9522, 11937, 13494, 13754, 20241, 20631, 23874, 35811, 40482, 41262, 51727, 61893, 71622, 91517, 103454, 123786, 155181, 183034, 274551, 310362, 465543, 549102, 823653, 931086, 1189721, 1647306, 2379442, 3569163, 7138326, 10707489, 21414978]

約数ペア:

[(1, 21414978), (2, 10707489), (3, 7138326), (6, 3569163), (9, 2379442), (13, 1647306), (18, 1189721), (23, 931086), (26, 823653), (39, 549102), (46, 465543), (69, 310362), (78, 274551), (117, 183034), (138, 155181), (173, 123786), (207, 103454), (234, 91517), (299, 71622), (346, 61893), (414, 51727), (519, 41262), (529, 40482), (598, 35811), (897, 23874), (1038, 20631), (1058, 20241), (1557, 13754), (1587, 13494), (1794, 11937), (2249, 9522), (2691, 7958), (3114, 6877), (3174, 6747), (3979, 5382), (4498, 4761)]