19902675

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 35935200

約数和(自身を除く): 16032525

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 137, 149, 195, 325, 411, 447, 685, 745, 975, 1781, 1937, 2055, 2235, 3425, 3725, 5343, 5811, 8905, 9685, 10275, 11175, 20413, 26715, 29055, 44525, 48425, 61239, 102065, 133575, 145275, 265369, 306195, 510325, 796107, 1326845, 1530975, 3980535, 6634225, 19902675]

約数ペア:

[(1, 19902675), (3, 6634225), (5, 3980535), (13, 1530975), (15, 1326845), (25, 796107), (39, 510325), (65, 306195), (75, 265369), (137, 145275), (149, 133575), (195, 102065), (325, 61239), (411, 48425), (447, 44525), (685, 29055), (745, 26715), (975, 20413), (1781, 11175), (1937, 10275), (2055, 9685), (2235, 8905), (3425, 5811), (3725, 5343)]