15663890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{907}}^1$

素因数の和:1082

約数の個数: 32

約数和(自身を含む): 30988224

約数和(自身を除く): 15324334

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 157, 314, 785, 907, 1570, 1727, 1814, 3454, 4535, 8635, 9070, 9977, 17270, 19954, 49885, 99770, 142399, 284798, 711995, 1423990, 1566389, 3132778, 7831945, 15663890]

約数ペア:

[(1, 15663890), (2, 7831945), (5, 3132778), (10, 1566389), (11, 1423990), (22, 711995), (55, 284798), (110, 142399), (157, 99770), (314, 49885), (785, 19954), (907, 17270), (1570, 9977), (1727, 9070), (1814, 8635), (3454, 4535)]