19680050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:192

約数の個数: 72

約数和(自身を含む): 42275196

約数和(自身を除く): 22595146

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 137, 169, 170, 221, 274, 325, 338, 425, 442, 650, 685, 845, 850, 1105, 1370, 1690, 1781, 2210, 2329, 2873, 3425, 3562, 4225, 4658, 5525, 5746, 6850, 8450, 8905, 11050, 11645, 14365, 17810, 23153, 23290, 28730, 30277, 44525, 46306, 58225, 60554, 71825, 89050, 115765, 116450, 143650, 151385, 231530, 302770, 393601, 578825, 756925, 787202, 1157650, 1513850, 1968005, 3936010, 9840025, 19680050]

約数ペア:

[(1, 19680050), (2, 9840025), (5, 3936010), (10, 1968005), (13, 1513850), (17, 1157650), (25, 787202), (26, 756925), (34, 578825), (50, 393601), (65, 302770), (85, 231530), (130, 151385), (137, 143650), (169, 116450), (170, 115765), (221, 89050), (274, 71825), (325, 60554), (338, 58225), (425, 46306), (442, 44525), (650, 30277), (685, 28730), (845, 23290), (850, 23153), (1105, 17810), (1370, 14365), (1690, 11645), (1781, 11050), (2210, 8905), (2329, 8450), (2873, 6850), (3425, 5746), (3562, 5525), (4225, 4658)]