21282950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 21839290

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 137, 239, 274, 325, 478, 650, 685, 1195, 1370, 1781, 2390, 3107, 3425, 3562, 5975, 6214, 6850, 8905, 11950, 15535, 17810, 31070, 32743, 44525, 65486, 77675, 89050, 155350, 163715, 327430, 425659, 818575, 851318, 1637150, 2128295, 4256590, 10641475, 21282950]

約数ペア:

[(1, 21282950), (2, 10641475), (5, 4256590), (10, 2128295), (13, 1637150), (25, 851318), (26, 818575), (50, 425659), (65, 327430), (130, 163715), (137, 155350), (239, 89050), (274, 77675), (325, 65486), (478, 44525), (650, 32743), (685, 31070), (1195, 17810), (1370, 15535), (1781, 11950), (2390, 8905), (3107, 6850), (3425, 6214), (3562, 5975)]