19945065

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^2\times {\mathrm{113}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 37713024

約数和(自身を除く): 17767959

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 113, 123, 205, 287, 339, 565, 615, 791, 861, 1435, 1681, 1695, 2373, 3955, 4305, 4633, 5043, 8405, 11767, 11865, 13899, 23165, 25215, 32431, 35301, 58835, 69495, 97293, 162155, 176505, 189953, 486465, 569859, 949765, 1329671, 2849295, 3989013, 6648355, 19945065]

約数ペア:

[(1, 19945065), (3, 6648355), (5, 3989013), (7, 2849295), (15, 1329671), (21, 949765), (35, 569859), (41, 486465), (105, 189953), (113, 176505), (123, 162155), (205, 97293), (287, 69495), (339, 58835), (565, 35301), (615, 32431), (791, 25215), (861, 23165), (1435, 13899), (1681, 11865), (1695, 11767), (2373, 8405), (3955, 5043), (4305, 4633)]