19976280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2729}}^1$

素因数の和:2804

約数の個数: 64

約数和(自身を含む): 60933600

約数和(自身を除く): 40957320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2729, 3660, 5458, 7320, 8187, 10916, 13645, 16374, 21832, 27290, 32748, 40935, 54580, 65496, 81870, 109160, 163740, 166469, 327480, 332938, 499407, 665876, 832345, 998814, 1331752, 1664690, 1997628, 2497035, 3329380, 3995256, 4994070, 6658760, 9988140, 19976280]

約数ペア:

[(1, 19976280), (2, 9988140), (3, 6658760), (4, 4994070), (5, 3995256), (6, 3329380), (8, 2497035), (10, 1997628), (12, 1664690), (15, 1331752), (20, 998814), (24, 832345), (30, 665876), (40, 499407), (60, 332938), (61, 327480), (120, 166469), (122, 163740), (183, 109160), (244, 81870), (305, 65496), (366, 54580), (488, 40935), (610, 32748), (732, 27290), (915, 21832), (1220, 16374), (1464, 13645), (1830, 10916), (2440, 8187), (2729, 7320), (3660, 5458)]