64621980

素因数分解:

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

素因数の和:396

約数の個数: 144

約数和(自身を含む): 208475904

約数和(自身を除く): 143853924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 37, 45, 60, 62, 74, 90, 93, 111, 124, 148, 155, 180, 185, 186, 222, 279, 310, 313, 333, 370, 372, 444, 465, 555, 558, 620, 626, 666, 740, 930, 939, 1110, 1116, 1147, 1252, 1332, 1395, 1565, 1665, 1860, 1878, 2220, 2294, 2790, 2817, 3130, 3330, 3441, 3756, 4588, 4695, 5580, 5634, 5735, 6260, 6660, 6882, 9390, 9703, 10323, 11268, 11470, 11581, 13764, 14085, 17205, 18780, 19406, 20646, 22940, 23162, 28170, 29109, 34410, 34743, 38812, 41292, 46324, 48515, 51615, 56340, 57905, 58218, 68820, 69486, 87327, 97030, 103230, 104229, 115810, 116436, 138972, 145545, 173715, 174654, 194060, 206460, 208458, 231620, 291090, 347430, 349308, 359011, 416916, 436635, 521145, 582180, 694860, 718022, 873270, 1042290, 1077033, 1436044, 1746540, 1795055, 2084580, 2154066, 3231099, 3590110, 4308132, 5385165, 6462198, 7180220, 10770330, 12924396, 16155495, 21540660, 32310990, 64621980]

約数ペア:

[(1, 64621980), (2, 32310990), (3, 21540660), (4, 16155495), (5, 12924396), (6, 10770330), (9, 7180220), (10, 6462198), (12, 5385165), (15, 4308132), (18, 3590110), (20, 3231099), (30, 2154066), (31, 2084580), (36, 1795055), (37, 1746540), (45, 1436044), (60, 1077033), (62, 1042290), (74, 873270), (90, 718022), (93, 694860), (111, 582180), (124, 521145), (148, 436635), (155, 416916), (180, 359011), (185, 349308), (186, 347430), (222, 291090), (279, 231620), (310, 208458), (313, 206460), (333, 194060), (370, 174654), (372, 173715), (444, 145545), (465, 138972), (555, 116436), (558, 115810), (620, 104229), (626, 103230), (666, 97030), (740, 87327), (930, 69486), (939, 68820), (1110, 58218), (1116, 57905), (1147, 56340), (1252, 51615), (1332, 48515), (1395, 46324), (1565, 41292), (1665, 38812), (1860, 34743), (1878, 34410), (2220, 29109), (2294, 28170), (2790, 23162), (2817, 22940), (3130, 20646), (3330, 19406), (3441, 18780), (3756, 17205), (4588, 14085), (4695, 13764), (5580, 11581), (5634, 11470), (5735, 11268), (6260, 10323), (6660, 9703), (6882, 9390)]