639270915

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1\times {\mathrm{829}}^1$

素因数の和:1447

約数の個数: 32

約数和(自身を含む): 1036238400

約数和(自身を除く): 396967485

約数列:

[1, 3, 5, 15, 101, 303, 505, 509, 829, 1515, 1527, 2487, 2545, 4145, 7635, 12435, 51409, 83729, 154227, 251187, 257045, 418645, 421961, 771135, 1255935, 1265883, 2109805, 6329415, 42618061, 127854183, 213090305, 639270915]

約数ペア:

[(1, 639270915), (3, 213090305), (5, 127854183), (15, 42618061), (101, 6329415), (303, 2109805), (505, 1265883), (509, 1255935), (829, 771135), (1515, 421961), (1527, 418645), (2487, 257045), (2545, 251187), (4145, 154227), (7635, 83729), (12435, 51409)]