21068910

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:112

約数の個数: 120

約数和(自身を含む): 61288920

約数和(自身を除く): 40220010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 37, 38, 45, 54, 57, 74, 81, 90, 95, 111, 114, 135, 162, 171, 185, 190, 222, 270, 285, 333, 342, 370, 405, 513, 555, 570, 666, 703, 810, 855, 999, 1026, 1110, 1369, 1406, 1539, 1665, 1710, 1998, 2109, 2565, 2738, 2997, 3078, 3330, 3515, 4107, 4218, 4995, 5130, 5994, 6327, 6845, 7030, 7695, 8214, 9990, 10545, 12321, 12654, 13690, 14985, 15390, 18981, 20535, 21090, 24642, 26011, 29970, 31635, 36963, 37962, 41070, 52022, 56943, 61605, 63270, 73926, 78033, 94905, 110889, 113886, 123210, 130055, 156066, 184815, 189810, 221778, 234099, 260110, 284715, 369630, 390165, 468198, 554445, 569430, 702297, 780330, 1108890, 1170495, 1404594, 2106891, 2340990, 3511485, 4213782, 7022970, 10534455, 21068910]

約数ペア:

[(1, 21068910), (2, 10534455), (3, 7022970), (5, 4213782), (6, 3511485), (9, 2340990), (10, 2106891), (15, 1404594), (18, 1170495), (19, 1108890), (27, 780330), (30, 702297), (37, 569430), (38, 554445), (45, 468198), (54, 390165), (57, 369630), (74, 284715), (81, 260110), (90, 234099), (95, 221778), (111, 189810), (114, 184815), (135, 156066), (162, 130055), (171, 123210), (185, 113886), (190, 110889), (222, 94905), (270, 78033), (285, 73926), (333, 63270), (342, 61605), (370, 56943), (405, 52022), (513, 41070), (555, 37962), (570, 36963), (666, 31635), (703, 29970), (810, 26011), (855, 24642), (999, 21090), (1026, 20535), (1110, 18981), (1369, 15390), (1406, 14985), (1539, 13690), (1665, 12654), (1710, 12321), (1998, 10545), (2109, 9990), (2565, 8214), (2738, 7695), (2997, 7030), (3078, 6845), (3330, 6327), (3515, 5994), (4107, 5130), (4218, 4995)]