19698380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{317}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 44876160

約数和(自身を除く): 25177780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 317, 478, 634, 956, 1195, 1268, 1585, 2390, 3107, 3170, 4121, 4780, 6214, 6340, 8242, 12428, 15535, 16484, 20605, 31070, 41210, 62140, 75763, 82420, 151526, 303052, 378815, 757630, 984919, 1515260, 1969838, 3939676, 4924595, 9849190, 19698380]

約数ペア:

[(1, 19698380), (2, 9849190), (4, 4924595), (5, 3939676), (10, 1969838), (13, 1515260), (20, 984919), (26, 757630), (52, 378815), (65, 303052), (130, 151526), (239, 82420), (260, 75763), (317, 62140), (478, 41210), (634, 31070), (956, 20605), (1195, 16484), (1268, 15535), (1585, 12428), (2390, 8242), (3107, 6340), (3170, 6214), (4121, 4780)]