209820120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{631}}^1$

素因数の和:825

約数の個数: 128

約数和(自身を含む): 671639040

約数和(自身を除く): 461818920

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, 163, 170, 204, 255, 326, 340, 408, 489, 510, 631, 652, 680, 815, 978, 1020, 1262, 1304, 1630, 1893, 1956, 2040, 2445, 2524, 2771, 3155, 3260, 3786, 3912, 4890, 5048, 5542, 6310, 6520, 7572, 8313, 9465, 9780, 10727, 11084, 12620, 13855, 15144, 16626, 18930, 19560, 21454, 22168, 25240, 27710, 32181, 33252, 37860, 41565, 42908, 53635, 55420, 64362, 66504, 75720, 83130, 85816, 102853, 107270, 110840, 128724, 160905, 166260, 205706, 214540, 257448, 308559, 321810, 332520, 411412, 429080, 514265, 617118, 643620, 822824, 1028530, 1234236, 1287240, 1542795, 1748501, 2057060, 2468472, 3085590, 3497002, 4114120, 5245503, 6171180, 6994004, 8742505, 10491006, 12342360, 13988008, 17485010, 20982012, 26227515, 34970020, 41964024, 52455030, 69940040, 104910060, 209820120]

約数ペア:

[(1, 209820120), (2, 104910060), (3, 69940040), (4, 52455030), (5, 41964024), (6, 34970020), (8, 26227515), (10, 20982012), (12, 17485010), (15, 13988008), (17, 12342360), (20, 10491006), (24, 8742505), (30, 6994004), (34, 6171180), (40, 5245503), (51, 4114120), (60, 3497002), (68, 3085590), (85, 2468472), (102, 2057060), (120, 1748501), (136, 1542795), (163, 1287240), (170, 1234236), (204, 1028530), (255, 822824), (326, 643620), (340, 617118), (408, 514265), (489, 429080), (510, 411412), (631, 332520), (652, 321810), (680, 308559), (815, 257448), (978, 214540), (1020, 205706), (1262, 166260), (1304, 160905), (1630, 128724), (1893, 110840), (1956, 107270), (2040, 102853), (2445, 85816), (2524, 83130), (2771, 75720), (3155, 66504), (3260, 64362), (3786, 55420), (3912, 53635), (4890, 42908), (5048, 41565), (5542, 37860), (6310, 33252), (6520, 32181), (7572, 27710), (8313, 25240), (9465, 22168), (9780, 21454), (10727, 19560), (11084, 18930), (12620, 16626), (13855, 15144)]