21887432

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{277}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 50440320

約数和(自身を除く): 28552888

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 83, 119, 136, 166, 238, 277, 332, 476, 554, 581, 664, 952, 1108, 1162, 1411, 1939, 2216, 2324, 2822, 3878, 4648, 4709, 5644, 7756, 9418, 9877, 11288, 15512, 18836, 19754, 22991, 32963, 37672, 39508, 45982, 65926, 79016, 91964, 131852, 160937, 183928, 263704, 321874, 390847, 643748, 781694, 1287496, 1563388, 2735929, 3126776, 5471858, 10943716, 21887432]

約数ペア:

[(1, 21887432), (2, 10943716), (4, 5471858), (7, 3126776), (8, 2735929), (14, 1563388), (17, 1287496), (28, 781694), (34, 643748), (56, 390847), (68, 321874), (83, 263704), (119, 183928), (136, 160937), (166, 131852), (238, 91964), (277, 79016), (332, 65926), (476, 45982), (554, 39508), (581, 37672), (664, 32963), (952, 22991), (1108, 19754), (1162, 18836), (1411, 15512), (1939, 11288), (2216, 9877), (2324, 9418), (2822, 7756), (3878, 5644), (4648, 4709)]