281036280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2131}}^1$

素因数の和:2309

約数の個数: 128

約数和(自身を含む): 970145280

約数和(自身を除く): 689109000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 157, 168, 210, 280, 314, 420, 471, 628, 785, 840, 942, 1099, 1256, 1570, 1884, 2131, 2198, 2355, 3140, 3297, 3768, 4262, 4396, 4710, 5495, 6280, 6393, 6594, 8524, 8792, 9420, 10655, 10990, 12786, 13188, 14917, 16485, 17048, 18840, 21310, 21980, 25572, 26376, 29834, 31965, 32970, 42620, 43960, 44751, 51144, 59668, 63930, 65940, 74585, 85240, 89502, 119336, 127860, 131880, 149170, 179004, 223755, 255720, 298340, 334567, 358008, 447510, 596680, 669134, 895020, 1003701, 1338268, 1672835, 1790040, 2007402, 2341969, 2676536, 3345670, 4014804, 4683938, 5018505, 6691340, 7025907, 8029608, 9367876, 10037010, 11709845, 13382680, 14051814, 18735752, 20074020, 23419690, 28103628, 35129535, 40148040, 46839380, 56207256, 70259070, 93678760, 140518140, 281036280]

約数ペア:

[(1, 281036280), (2, 140518140), (3, 93678760), (4, 70259070), (5, 56207256), (6, 46839380), (7, 40148040), (8, 35129535), (10, 28103628), (12, 23419690), (14, 20074020), (15, 18735752), (20, 14051814), (21, 13382680), (24, 11709845), (28, 10037010), (30, 9367876), (35, 8029608), (40, 7025907), (42, 6691340), (56, 5018505), (60, 4683938), (70, 4014804), (84, 3345670), (105, 2676536), (120, 2341969), (140, 2007402), (157, 1790040), (168, 1672835), (210, 1338268), (280, 1003701), (314, 895020), (420, 669134), (471, 596680), (628, 447510), (785, 358008), (840, 334567), (942, 298340), (1099, 255720), (1256, 223755), (1570, 179004), (1884, 149170), (2131, 131880), (2198, 127860), (2355, 119336), (3140, 89502), (3297, 85240), (3768, 74585), (4262, 65940), (4396, 63930), (4710, 59668), (5495, 51144), (6280, 44751), (6393, 43960), (6594, 42620), (8524, 32970), (8792, 31965), (9420, 29834), (10655, 26376), (10990, 25572), (12786, 21980), (13188, 21310), (14917, 18840), (16485, 17048)]