19090420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{751}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 42448896

約数和(自身を除く): 23358476

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 751, 820, 1271, 1502, 2542, 3004, 3755, 5084, 6355, 7510, 12710, 15020, 23281, 25420, 30791, 46562, 61582, 93124, 116405, 123164, 153955, 232810, 307910, 465620, 615820, 954521, 1909042, 3818084, 4772605, 9545210, 19090420]

約数ペア:

[(1, 19090420), (2, 9545210), (4, 4772605), (5, 3818084), (10, 1909042), (20, 954521), (31, 615820), (41, 465620), (62, 307910), (82, 232810), (124, 153955), (155, 123164), (164, 116405), (205, 93124), (310, 61582), (410, 46562), (620, 30791), (751, 25420), (820, 23281), (1271, 15020), (1502, 12710), (2542, 7510), (3004, 6355), (3755, 5084)]