2018666875

素因数分解:

$5^4\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:470

約数の個数: 60

約数和(自身を含む): 2785170960

約数和(自身を除く): 766504085

約数列:

[1, 5, 19, 23, 25, 95, 115, 125, 361, 389, 437, 475, 575, 625, 1805, 1945, 2185, 2375, 2875, 7391, 8303, 8947, 9025, 9725, 10925, 11875, 14375, 36955, 41515, 44735, 45125, 48625, 54625, 140429, 169993, 184775, 207575, 223675, 225625, 243125, 273125, 702145, 849965, 923875, 1037875, 1118375, 3229867, 3510725, 4249825, 4619375, 5189375, 5591875, 16149335, 17553625, 21249125, 80746675, 87768125, 106245625, 403733375, 2018666875]

約数ペア:

[(1, 2018666875), (5, 403733375), (19, 106245625), (23, 87768125), (25, 80746675), (95, 21249125), (115, 17553625), (125, 16149335), (361, 5591875), (389, 5189375), (437, 4619375), (475, 4249825), (575, 3510725), (625, 3229867), (1805, 1118375), (1945, 1037875), (2185, 923875), (2375, 849965), (2875, 702145), (7391, 273125), (8303, 243125), (8947, 225625), (9025, 223675), (9725, 207575), (10925, 184775), (11875, 169993), (14375, 140429), (36955, 54625), (41515, 48625), (44735, 45125)]