8266270480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{20021}}^1$

素因数の和:20444

約数の個数: 80

約数和(自身を含む): 20750640624

約数和(自身を除く): 12484370144

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 397, 520, 794, 1040, 1588, 1985, 3176, 3970, 5161, 6352, 7940, 10322, 15880, 20021, 20644, 25805, 31760, 40042, 41288, 51610, 80084, 82576, 100105, 103220, 160168, 200210, 206440, 260273, 320336, 400420, 412880, 520546, 800840, 1041092, 1301365, 1601680, 2082184, 2602730, 4164368, 5205460, 7948337, 10410920, 15896674, 20821840, 31793348, 39741685, 63586696, 79483370, 103328381, 127173392, 158966740, 206656762, 317933480, 413313524, 516641905, 635866960, 826627048, 1033283810, 1653254096, 2066567620, 4133135240, 8266270480]

約数ペア:

[(1, 8266270480), (2, 4133135240), (4, 2066567620), (5, 1653254096), (8, 1033283810), (10, 826627048), (13, 635866960), (16, 516641905), (20, 413313524), (26, 317933480), (40, 206656762), (52, 158966740), (65, 127173392), (80, 103328381), (104, 79483370), (130, 63586696), (208, 39741685), (260, 31793348), (397, 20821840), (520, 15896674), (794, 10410920), (1040, 7948337), (1588, 5205460), (1985, 4164368), (3176, 2602730), (3970, 2082184), (5161, 1601680), (6352, 1301365), (7940, 1041092), (10322, 800840), (15880, 520546), (20021, 412880), (20644, 400420), (25805, 320336), (31760, 260273), (40042, 206440), (41288, 200210), (51610, 160168), (80084, 103220), (82576, 100105)]