289098520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{1087}}^1$

素因数の和:1268

約数の個数: 64

約数和(自身を含む): 667814400

約数和(自身を除く): 378715880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 109, 122, 218, 244, 305, 436, 488, 545, 610, 872, 1087, 1090, 1220, 2174, 2180, 2440, 4348, 4360, 5435, 6649, 8696, 10870, 13298, 21740, 26596, 33245, 43480, 53192, 66307, 66490, 118483, 132614, 132980, 236966, 265228, 265960, 331535, 473932, 530456, 592415, 663070, 947864, 1184830, 1326140, 2369660, 2652280, 4739320, 7227463, 14454926, 28909852, 36137315, 57819704, 72274630, 144549260, 289098520]

約数ペア:

[(1, 289098520), (2, 144549260), (4, 72274630), (5, 57819704), (8, 36137315), (10, 28909852), (20, 14454926), (40, 7227463), (61, 4739320), (109, 2652280), (122, 2369660), (218, 1326140), (244, 1184830), (305, 947864), (436, 663070), (488, 592415), (545, 530456), (610, 473932), (872, 331535), (1087, 265960), (1090, 265228), (1220, 236966), (2174, 132980), (2180, 132614), (2440, 118483), (4348, 66490), (4360, 66307), (5435, 53192), (6649, 43480), (8696, 33245), (10870, 26596), (13298, 21740)]