638565560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{40829}}^1$

素因数の和:40880

約数の個数: 64

約数和(自身を含む): 1587470400

約数和(自身を除く): 948904840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1564, 1955, 3128, 3910, 7820, 15640, 40829, 81658, 163316, 204145, 326632, 408290, 694093, 816580, 939067, 1388186, 1633160, 1878134, 2776372, 3470465, 3756268, 4695335, 5552744, 6940930, 7512536, 9390670, 13881860, 15964139, 18781340, 27763720, 31928278, 37562680, 63856556, 79820695, 127713112, 159641390, 319282780, 638565560]

約数ペア:

[(1, 638565560), (2, 319282780), (4, 159641390), (5, 127713112), (8, 79820695), (10, 63856556), (17, 37562680), (20, 31928278), (23, 27763720), (34, 18781340), (40, 15964139), (46, 13881860), (68, 9390670), (85, 7512536), (92, 6940930), (115, 5552744), (136, 4695335), (170, 3756268), (184, 3470465), (230, 2776372), (340, 1878134), (391, 1633160), (460, 1388186), (680, 939067), (782, 816580), (920, 694093), (1564, 408290), (1955, 326632), (3128, 204145), (3910, 163316), (7820, 81658), (15640, 40829)]