20579760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{283}}^1$

素因数の和:403

約数の個数: 120

約数和(自身を含む): 70044624

約数和(自身を除く): 49464864

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 101, 120, 144, 180, 202, 240, 283, 303, 360, 404, 505, 566, 606, 720, 808, 849, 909, 1010, 1132, 1212, 1415, 1515, 1616, 1698, 1818, 2020, 2264, 2424, 2547, 2830, 3030, 3396, 3636, 4040, 4245, 4528, 4545, 4848, 5094, 5660, 6060, 6792, 7272, 8080, 8490, 9090, 10188, 11320, 12120, 12735, 13584, 14544, 16980, 18180, 20376, 22640, 24240, 25470, 28583, 33960, 36360, 40752, 50940, 57166, 67920, 72720, 85749, 101880, 114332, 142915, 171498, 203760, 228664, 257247, 285830, 342996, 428745, 457328, 514494, 571660, 685992, 857490, 1028988, 1143320, 1286235, 1371984, 1714980, 2057976, 2286640, 2572470, 3429960, 4115952, 5144940, 6859920, 10289880, 20579760]

約数ペア:

[(1, 20579760), (2, 10289880), (3, 6859920), (4, 5144940), (5, 4115952), (6, 3429960), (8, 2572470), (9, 2286640), (10, 2057976), (12, 1714980), (15, 1371984), (16, 1286235), (18, 1143320), (20, 1028988), (24, 857490), (30, 685992), (36, 571660), (40, 514494), (45, 457328), (48, 428745), (60, 342996), (72, 285830), (80, 257247), (90, 228664), (101, 203760), (120, 171498), (144, 142915), (180, 114332), (202, 101880), (240, 85749), (283, 72720), (303, 67920), (360, 57166), (404, 50940), (505, 40752), (566, 36360), (606, 33960), (720, 28583), (808, 25470), (849, 24240), (909, 22640), (1010, 20376), (1132, 18180), (1212, 16980), (1415, 14544), (1515, 13584), (1616, 12735), (1698, 12120), (1818, 11320), (2020, 10188), (2264, 9090), (2424, 8490), (2547, 8080), (2830, 7272), (3030, 6792), (3396, 6060), (3636, 5660), (4040, 5094), (4245, 4848), (4528, 4545)]