20703970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 47278080

約数和(自身を除く): 26574110

約数列:

[1, 2, 5, 7, 10, 14, 29, 31, 35, 47, 49, 58, 62, 70, 94, 98, 145, 155, 203, 217, 235, 245, 290, 310, 329, 406, 434, 470, 490, 658, 899, 1015, 1085, 1363, 1421, 1457, 1519, 1645, 1798, 2030, 2170, 2303, 2726, 2842, 2914, 3038, 3290, 4495, 4606, 6293, 6815, 7105, 7285, 7595, 8990, 9541, 10199, 11515, 12586, 13630, 14210, 14570, 15190, 19082, 20398, 23030, 31465, 42253, 44051, 47705, 50995, 62930, 66787, 71393, 84506, 88102, 95410, 101990, 133574, 142786, 211265, 220255, 295771, 333935, 356965, 422530, 440510, 591542, 667870, 713930, 1478855, 2070397, 2957710, 4140794, 10351985, 20703970]

約数ペア:

[(1, 20703970), (2, 10351985), (5, 4140794), (7, 2957710), (10, 2070397), (14, 1478855), (29, 713930), (31, 667870), (35, 591542), (47, 440510), (49, 422530), (58, 356965), (62, 333935), (70, 295771), (94, 220255), (98, 211265), (145, 142786), (155, 133574), (203, 101990), (217, 95410), (235, 88102), (245, 84506), (290, 71393), (310, 66787), (329, 62930), (406, 50995), (434, 47705), (470, 44051), (490, 42253), (658, 31465), (899, 23030), (1015, 20398), (1085, 19082), (1363, 15190), (1421, 14570), (1457, 14210), (1519, 13630), (1645, 12586), (1798, 11515), (2030, 10199), (2170, 9541), (2303, 8990), (2726, 7595), (2842, 7285), (2914, 7105), (3038, 6815), (3290, 6293), (4495, 4606)]