205940040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{643}}^1$

素因数の和:831

約数の個数: 128

約数和(自身を含む): 659352960

約数和(自身を除く): 453412920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 157, 170, 204, 255, 314, 340, 408, 471, 510, 628, 643, 680, 785, 942, 1020, 1256, 1286, 1570, 1884, 1929, 2040, 2355, 2572, 2669, 3140, 3215, 3768, 3858, 4710, 5144, 5338, 6280, 6430, 7716, 8007, 9420, 9645, 10676, 10931, 12860, 13345, 15432, 16014, 18840, 19290, 21352, 21862, 25720, 26690, 32028, 32793, 38580, 40035, 43724, 53380, 54655, 64056, 65586, 77160, 80070, 87448, 100951, 106760, 109310, 131172, 160140, 163965, 201902, 218620, 262344, 302853, 320280, 327930, 403804, 437240, 504755, 605706, 655860, 807608, 1009510, 1211412, 1311720, 1514265, 1716167, 2019020, 2422824, 3028530, 3432334, 4038040, 5148501, 6057060, 6864668, 8580835, 10297002, 12114120, 13729336, 17161670, 20594004, 25742505, 34323340, 41188008, 51485010, 68646680, 102970020, 205940040]

約数ペア:

[(1, 205940040), (2, 102970020), (3, 68646680), (4, 51485010), (5, 41188008), (6, 34323340), (8, 25742505), (10, 20594004), (12, 17161670), (15, 13729336), (17, 12114120), (20, 10297002), (24, 8580835), (30, 6864668), (34, 6057060), (40, 5148501), (51, 4038040), (60, 3432334), (68, 3028530), (85, 2422824), (102, 2019020), (120, 1716167), (136, 1514265), (157, 1311720), (170, 1211412), (204, 1009510), (255, 807608), (314, 655860), (340, 605706), (408, 504755), (471, 437240), (510, 403804), (628, 327930), (643, 320280), (680, 302853), (785, 262344), (942, 218620), (1020, 201902), (1256, 163965), (1286, 160140), (1570, 131172), (1884, 109310), (1929, 106760), (2040, 100951), (2355, 87448), (2572, 80070), (2669, 77160), (3140, 65586), (3215, 64056), (3768, 54655), (3858, 53380), (4710, 43724), (5144, 40035), (5338, 38580), (6280, 32793), (6430, 32028), (7716, 26690), (8007, 25720), (9420, 21862), (9645, 21352), (10676, 19290), (10931, 18840), (12860, 16014), (13345, 15432)]