15661912825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{353}}^1\times {\mathrm{647}}^1$

素因数の和:1234

約数の個数: 48

約数和(自身を含む): 21105899136

約数和(自身を除く): 5443986311

約数列:

[1, 5, 13, 25, 65, 211, 325, 353, 647, 1055, 1765, 2743, 3235, 4589, 5275, 8411, 8825, 13715, 16175, 22945, 42055, 68575, 74483, 114725, 136517, 210275, 228391, 372415, 682585, 968279, 1141955, 1774721, 1862075, 2969083, 3412925, 4841395, 5709775, 8873605, 14845415, 24206975, 44368025, 48190501, 74227075, 240952505, 626476513, 1204762525, 3132382565, 15661912825]

約数ペア:

[(1, 15661912825), (5, 3132382565), (13, 1204762525), (25, 626476513), (65, 240952505), (211, 74227075), (325, 48190501), (353, 44368025), (647, 24206975), (1055, 14845415), (1765, 8873605), (2743, 5709775), (3235, 4841395), (4589, 3412925), (5275, 2969083), (8411, 1862075), (8825, 1774721), (13715, 1141955), (16175, 968279), (22945, 682585), (42055, 372415), (68575, 228391), (74483, 210275), (114725, 136517)]