81342300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20857}}^1$

素因数の和:20887

約数の個数: 72

約数和(自身を含む): 253466416

約数和(自身を除く): 172124116

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 20857, 41714, 62571, 83428, 104285, 125142, 208570, 250284, 271141, 312855, 417140, 521425, 542282, 625710, 813423, 1042850, 1084564, 1251420, 1355705, 1564275, 1626846, 2085700, 2711410, 3128550, 3253692, 4067115, 5422820, 6257100, 6778525, 8134230, 13557050, 16268460, 20335575, 27114100, 40671150, 81342300]

約数ペア:

[(1, 81342300), (2, 40671150), (3, 27114100), (4, 20335575), (5, 16268460), (6, 13557050), (10, 8134230), (12, 6778525), (13, 6257100), (15, 5422820), (20, 4067115), (25, 3253692), (26, 3128550), (30, 2711410), (39, 2085700), (50, 1626846), (52, 1564275), (60, 1355705), (65, 1251420), (75, 1084564), (78, 1042850), (100, 813423), (130, 625710), (150, 542282), (156, 521425), (195, 417140), (260, 312855), (300, 271141), (325, 250284), (390, 208570), (650, 125142), (780, 104285), (975, 83428), (1300, 62571), (1950, 41714), (3900, 20857)]