388921000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{29917}}^1$

素因数の和:29951

約数の個数: 64

約数和(自身を含む): 980113680

約数和(自身を除く): 591192680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1625, 2600, 3250, 6500, 13000, 29917, 59834, 119668, 149585, 239336, 299170, 388921, 598340, 747925, 777842, 1196680, 1495850, 1555684, 1944605, 2991700, 3111368, 3739625, 3889210, 5983400, 7479250, 7778420, 9723025, 14958500, 15556840, 19446050, 29917000, 38892100, 48615125, 77784200, 97230250, 194460500, 388921000]

約数ペア:

[(1, 388921000), (2, 194460500), (4, 97230250), (5, 77784200), (8, 48615125), (10, 38892100), (13, 29917000), (20, 19446050), (25, 15556840), (26, 14958500), (40, 9723025), (50, 7778420), (52, 7479250), (65, 5983400), (100, 3889210), (104, 3739625), (125, 3111368), (130, 2991700), (200, 1944605), (250, 1555684), (260, 1495850), (325, 1196680), (500, 777842), (520, 747925), (650, 598340), (1000, 388921), (1300, 299170), (1625, 239336), (2600, 149585), (3250, 119668), (6500, 59834), (13000, 29917)]