2556970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 5336280

約数和(自身を除く): 2779310

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 89, 130, 169, 170, 178, 221, 338, 442, 445, 845, 890, 1105, 1157, 1513, 1690, 2210, 2314, 2873, 3026, 5746, 5785, 7565, 11570, 14365, 15041, 15130, 19669, 28730, 30082, 39338, 75205, 98345, 150410, 196690, 255697, 511394, 1278485, 2556970]

約数ペア:

[(1, 2556970), (2, 1278485), (5, 511394), (10, 255697), (13, 196690), (17, 150410), (26, 98345), (34, 75205), (65, 39338), (85, 30082), (89, 28730), (130, 19669), (169, 15130), (170, 15041), (178, 14365), (221, 11570), (338, 7565), (442, 5785), (445, 5746), (845, 3026), (890, 2873), (1105, 2314), (1157, 2210), (1513, 1690)]