389680980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499591}}^1$

素因数の和:499616

約数の個数: 48

約数和(自身を含む): 1175040384

約数和(自身を除く): 785359404

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, 499591, 999182, 1498773, 1998364, 2497955, 2997546, 4995910, 5995092, 6494683, 7493865, 9991820, 12989366, 14987730, 19484049, 25978732, 29975460, 32473415, 38968098, 64946830, 77936196, 97420245, 129893660, 194840490, 389680980]

約数ペア:

[(1, 389680980), (2, 194840490), (3, 129893660), (4, 97420245), (5, 77936196), (6, 64946830), (10, 38968098), (12, 32473415), (13, 29975460), (15, 25978732), (20, 19484049), (26, 14987730), (30, 12989366), (39, 9991820), (52, 7493865), (60, 6494683), (65, 5995092), (78, 4995910), (130, 2997546), (156, 2497955), (195, 1998364), (260, 1498773), (390, 999182), (780, 499591)]