18726960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 160

約数和(自身を含む): 67709952

約数和(自身を除く): 48982992

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 71, 80, 84, 105, 112, 120, 140, 142, 157, 168, 210, 213, 240, 280, 284, 314, 336, 355, 420, 426, 471, 497, 560, 568, 628, 710, 785, 840, 852, 942, 994, 1065, 1099, 1136, 1256, 1420, 1491, 1570, 1680, 1704, 1884, 1988, 2130, 2198, 2355, 2485, 2512, 2840, 2982, 3140, 3297, 3408, 3768, 3976, 4260, 4396, 4710, 4970, 5495, 5680, 5964, 6280, 6594, 7455, 7536, 7952, 8520, 8792, 9420, 9940, 10990, 11147, 11928, 12560, 13188, 14910, 16485, 17040, 17584, 18840, 19880, 21980, 22294, 23856, 26376, 29820, 32970, 33441, 37680, 39760, 43960, 44588, 52752, 55735, 59640, 65940, 66882, 78029, 87920, 89176, 111470, 119280, 131880, 133764, 156058, 167205, 178352, 222940, 234087, 263760, 267528, 312116, 334410, 390145, 445880, 468174, 535056, 624232, 668820, 780290, 891760, 936348, 1170435, 1248464, 1337640, 1560580, 1872696, 2340870, 2675280, 3121160, 3745392, 4681740, 6242320, 9363480, 18726960]

約数ペア:

[(1, 18726960), (2, 9363480), (3, 6242320), (4, 4681740), (5, 3745392), (6, 3121160), (7, 2675280), (8, 2340870), (10, 1872696), (12, 1560580), (14, 1337640), (15, 1248464), (16, 1170435), (20, 936348), (21, 891760), (24, 780290), (28, 668820), (30, 624232), (35, 535056), (40, 468174), (42, 445880), (48, 390145), (56, 334410), (60, 312116), (70, 267528), (71, 263760), (80, 234087), (84, 222940), (105, 178352), (112, 167205), (120, 156058), (140, 133764), (142, 131880), (157, 119280), (168, 111470), (210, 89176), (213, 87920), (240, 78029), (280, 66882), (284, 65940), (314, 59640), (336, 55735), (355, 52752), (420, 44588), (426, 43960), (471, 39760), (497, 37680), (560, 33441), (568, 32970), (628, 29820), (710, 26376), (785, 23856), (840, 22294), (852, 21980), (942, 19880), (994, 18840), (1065, 17584), (1099, 17040), (1136, 16485), (1256, 14910), (1420, 13188), (1491, 12560), (1570, 11928), (1680, 11147), (1704, 10990), (1884, 9940), (1988, 9420), (2130, 8792), (2198, 8520), (2355, 7952), (2485, 7536), (2512, 7455), (2840, 6594), (2982, 6280), (3140, 5964), (3297, 5680), (3408, 5495), (3768, 4970), (3976, 4710), (4260, 4396)]