20153205

素因数分解:

$3^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 38572800

約数和(自身を除く): 18419595

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 97, 135, 171, 243, 285, 291, 405, 485, 513, 729, 855, 873, 1215, 1455, 1539, 1843, 2187, 2565, 2619, 3645, 4365, 4617, 5529, 7695, 7857, 9215, 10935, 13095, 13851, 16587, 23085, 23571, 27645, 39285, 41553, 49761, 69255, 70713, 82935, 117855, 149283, 207765, 212139, 248805, 353565, 447849, 746415, 1060695, 1343547, 2239245, 4030641, 6717735, 20153205]

約数ペア:

[(1, 20153205), (3, 6717735), (5, 4030641), (9, 2239245), (15, 1343547), (19, 1060695), (27, 746415), (45, 447849), (57, 353565), (81, 248805), (95, 212139), (97, 207765), (135, 149283), (171, 117855), (243, 82935), (285, 70713), (291, 69255), (405, 49761), (485, 41553), (513, 39285), (729, 27645), (855, 23571), (873, 23085), (1215, 16587), (1455, 13851), (1539, 13095), (1843, 10935), (2187, 9215), (2565, 7857), (2619, 7695), (3645, 5529), (4365, 4617)]