19720974

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1901}}^1$

素因数の和:1945

約数の個数: 64

約数和(自身を含む): 51125760

約数和(自身を除く): 31404786

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 26, 38, 39, 42, 57, 78, 91, 114, 133, 182, 247, 266, 273, 399, 494, 546, 741, 798, 1482, 1729, 1901, 3458, 3802, 5187, 5703, 10374, 11406, 13307, 24713, 26614, 36119, 39921, 49426, 72238, 74139, 79842, 108357, 148278, 172991, 216714, 252833, 345982, 469547, 505666, 518973, 758499, 939094, 1037946, 1408641, 1516998, 2817282, 3286829, 6573658, 9860487, 19720974]

約数ペア:

[(1, 19720974), (2, 9860487), (3, 6573658), (6, 3286829), (7, 2817282), (13, 1516998), (14, 1408641), (19, 1037946), (21, 939094), (26, 758499), (38, 518973), (39, 505666), (42, 469547), (57, 345982), (78, 252833), (91, 216714), (114, 172991), (133, 148278), (182, 108357), (247, 79842), (266, 74139), (273, 72238), (399, 49426), (494, 39921), (546, 36119), (741, 26614), (798, 24713), (1482, 13307), (1729, 11406), (1901, 10374), (3458, 5703), (3802, 5187)]