20453720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4297}}^1$

素因数の和:4332

約数の個数: 64

約数和(自身を含む): 55702080

約数和(自身を除く): 35248360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4297, 4760, 8594, 17188, 21485, 30079, 34376, 42970, 60158, 73049, 85940, 120316, 146098, 150395, 171880, 240632, 292196, 300790, 365245, 511343, 584392, 601580, 730490, 1022686, 1203160, 1460980, 2045372, 2556715, 2921960, 4090744, 5113430, 10226860, 20453720]

約数ペア:

[(1, 20453720), (2, 10226860), (4, 5113430), (5, 4090744), (7, 2921960), (8, 2556715), (10, 2045372), (14, 1460980), (17, 1203160), (20, 1022686), (28, 730490), (34, 601580), (35, 584392), (40, 511343), (56, 365245), (68, 300790), (70, 292196), (85, 240632), (119, 171880), (136, 150395), (140, 146098), (170, 120316), (238, 85940), (280, 73049), (340, 60158), (476, 42970), (595, 34376), (680, 30079), (952, 21485), (1190, 17188), (2380, 8594), (4297, 4760)]