398744580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{511211}}^1$

素因数の和:511236

約数の個数: 48

約数和(自身を含む): 1202370624

約数和(自身を除く): 803626044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 511211, 1022422, 1533633, 2044844, 2556055, 3067266, 5112110, 6134532, 6645743, 7668165, 10224220, 13291486, 15336330, 19937229, 26582972, 30672660, 33228715, 39874458, 66457430, 79748916, 99686145, 132914860, 199372290, 398744580]

約数ペア:

[(1, 398744580), (2, 199372290), (3, 132914860), (4, 99686145), (5, 79748916), (6, 66457430), (10, 39874458), (12, 33228715), (13, 30672660), (15, 26582972), (20, 19937229), (26, 15336330), (30, 13291486), (39, 10224220), (52, 7668165), (60, 6645743), (65, 6134532), (78, 5112110), (130, 3067266), (156, 2556055), (195, 2044844), (260, 1533633), (390, 1022422), (780, 511211)]