21809740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1213}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 48948480

約数和(自身を除く): 27138740

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1213, 1798, 2426, 3596, 4495, 4852, 6065, 8990, 12130, 17980, 24260, 35177, 37603, 70354, 75206, 140708, 150412, 175885, 188015, 351770, 376030, 703540, 752060, 1090487, 2180974, 4361948, 5452435, 10904870, 21809740]

約数ペア:

[(1, 21809740), (2, 10904870), (4, 5452435), (5, 4361948), (10, 2180974), (20, 1090487), (29, 752060), (31, 703540), (58, 376030), (62, 351770), (116, 188015), (124, 175885), (145, 150412), (155, 140708), (290, 75206), (310, 70354), (580, 37603), (620, 35177), (899, 24260), (1213, 17980), (1798, 12130), (2426, 8990), (3596, 6065), (4495, 4852)]