21540660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:393

約数の個数: 96

約数和(自身を含む): 64146432

約数和(自身を除く): 42605772

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 37, 60, 62, 74, 93, 111, 124, 148, 155, 185, 186, 222, 310, 313, 370, 372, 444, 465, 555, 620, 626, 740, 930, 939, 1110, 1147, 1252, 1565, 1860, 1878, 2220, 2294, 3130, 3441, 3756, 4588, 4695, 5735, 6260, 6882, 9390, 9703, 11470, 11581, 13764, 17205, 18780, 19406, 22940, 23162, 29109, 34410, 34743, 38812, 46324, 48515, 57905, 58218, 68820, 69486, 97030, 115810, 116436, 138972, 145545, 173715, 194060, 231620, 291090, 347430, 359011, 582180, 694860, 718022, 1077033, 1436044, 1795055, 2154066, 3590110, 4308132, 5385165, 7180220, 10770330, 21540660]

約数ペア:

[(1, 21540660), (2, 10770330), (3, 7180220), (4, 5385165), (5, 4308132), (6, 3590110), (10, 2154066), (12, 1795055), (15, 1436044), (20, 1077033), (30, 718022), (31, 694860), (37, 582180), (60, 359011), (62, 347430), (74, 291090), (93, 231620), (111, 194060), (124, 173715), (148, 145545), (155, 138972), (185, 116436), (186, 115810), (222, 97030), (310, 69486), (313, 68820), (370, 58218), (372, 57905), (444, 48515), (465, 46324), (555, 38812), (620, 34743), (626, 34410), (740, 29109), (930, 23162), (939, 22940), (1110, 19406), (1147, 18780), (1252, 17205), (1565, 13764), (1860, 11581), (1878, 11470), (2220, 9703), (2294, 9390), (3130, 6882), (3441, 6260), (3756, 5735), (4588, 4695)]