260777560

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^2\times {\mathrm{199}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 592974000

約数和(自身を除く): 332196440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 199, 362, 398, 724, 796, 905, 995, 1448, 1592, 1810, 1990, 3620, 3980, 7240, 7960, 32761, 36019, 65522, 72038, 131044, 144076, 163805, 180095, 262088, 288152, 327610, 360190, 655220, 720380, 1310440, 1440760, 6519439, 13038878, 26077756, 32597195, 52155512, 65194390, 130388780, 260777560]

約数ペア:

[(1, 260777560), (2, 130388780), (4, 65194390), (5, 52155512), (8, 32597195), (10, 26077756), (20, 13038878), (40, 6519439), (181, 1440760), (199, 1310440), (362, 720380), (398, 655220), (724, 360190), (796, 327610), (905, 288152), (995, 262088), (1448, 180095), (1592, 163805), (1810, 144076), (1990, 131044), (3620, 72038), (3980, 65522), (7240, 36019), (7960, 32761)]