215666490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{552991}}^1$

素因数の和:553014

約数の個数: 32

約数和(自身を含む): 557415936

約数和(自身を除く): 341749446

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 552991, 1105982, 1658973, 2764955, 3317946, 5529910, 7188883, 8294865, 14377766, 16589730, 21566649, 35944415, 43133298, 71888830, 107833245, 215666490]

約数ペア:

[(1, 215666490), (2, 107833245), (3, 71888830), (5, 43133298), (6, 35944415), (10, 21566649), (13, 16589730), (15, 14377766), (26, 8294865), (30, 7188883), (39, 5529910), (65, 3317946), (78, 2764955), (130, 1658973), (195, 1105982), (390, 552991)]