21232680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:208

約数の個数: 192

約数和(自身を含む): 77811840

約数和(自身を除く): 56579160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 49, 56, 60, 69, 70, 84, 92, 98, 105, 115, 120, 138, 140, 147, 157, 161, 168, 184, 196, 210, 230, 245, 276, 280, 294, 314, 322, 345, 392, 420, 460, 471, 483, 490, 552, 588, 628, 644, 690, 735, 785, 805, 840, 920, 942, 966, 980, 1099, 1127, 1176, 1256, 1288, 1380, 1470, 1570, 1610, 1884, 1932, 1960, 2198, 2254, 2355, 2415, 2760, 2940, 3140, 3220, 3297, 3381, 3611, 3768, 3864, 4396, 4508, 4710, 4830, 5495, 5635, 5880, 6280, 6440, 6594, 6762, 7222, 7693, 8792, 9016, 9420, 9660, 10833, 10990, 11270, 13188, 13524, 14444, 15386, 16485, 16905, 18055, 18840, 19320, 21666, 21980, 22540, 23079, 25277, 26376, 27048, 28888, 30772, 32970, 33810, 36110, 38465, 43332, 43960, 45080, 46158, 50554, 54165, 61544, 65940, 67620, 72220, 75831, 76930, 86664, 92316, 101108, 108330, 115395, 126385, 131880, 135240, 144440, 151662, 153860, 176939, 184632, 202216, 216660, 230790, 252770, 303324, 307720, 353878, 379155, 433320, 461580, 505540, 530817, 606648, 707756, 758310, 884695, 923160, 1011080, 1061634, 1415512, 1516620, 1769390, 2123268, 2654085, 3033240, 3538780, 4246536, 5308170, 7077560, 10616340, 21232680]

約数ペア:

[(1, 21232680), (2, 10616340), (3, 7077560), (4, 5308170), (5, 4246536), (6, 3538780), (7, 3033240), (8, 2654085), (10, 2123268), (12, 1769390), (14, 1516620), (15, 1415512), (20, 1061634), (21, 1011080), (23, 923160), (24, 884695), (28, 758310), (30, 707756), (35, 606648), (40, 530817), (42, 505540), (46, 461580), (49, 433320), (56, 379155), (60, 353878), (69, 307720), (70, 303324), (84, 252770), (92, 230790), (98, 216660), (105, 202216), (115, 184632), (120, 176939), (138, 153860), (140, 151662), (147, 144440), (157, 135240), (161, 131880), (168, 126385), (184, 115395), (196, 108330), (210, 101108), (230, 92316), (245, 86664), (276, 76930), (280, 75831), (294, 72220), (314, 67620), (322, 65940), (345, 61544), (392, 54165), (420, 50554), (460, 46158), (471, 45080), (483, 43960), (490, 43332), (552, 38465), (588, 36110), (628, 33810), (644, 32970), (690, 30772), (735, 28888), (785, 27048), (805, 26376), (840, 25277), (920, 23079), (942, 22540), (966, 21980), (980, 21666), (1099, 19320), (1127, 18840), (1176, 18055), (1256, 16905), (1288, 16485), (1380, 15386), (1470, 14444), (1570, 13524), (1610, 13188), (1884, 11270), (1932, 10990), (1960, 10833), (2198, 9660), (2254, 9420), (2355, 9016), (2415, 8792), (2760, 7693), (2940, 7222), (3140, 6762), (3220, 6594), (3297, 6440), (3381, 6280), (3611, 5880), (3768, 5635), (3864, 5495), (4396, 4830), (4508, 4710)]