661251520

素因数分解:

$2^6\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28307}}^1$

素因数の和:28397

約数の個数: 56

約数和(自身を含む): 1596231504

約数和(自身を除く): 934979984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 146, 160, 292, 320, 365, 584, 730, 1168, 1460, 2336, 2920, 4672, 5840, 11680, 23360, 28307, 56614, 113228, 141535, 226456, 283070, 452912, 566140, 905824, 1132280, 1811648, 2066411, 2264560, 4132822, 4529120, 8265644, 9058240, 10332055, 16531288, 20664110, 33062576, 41328220, 66125152, 82656440, 132250304, 165312880, 330625760, 661251520]

約数ペア:

[(1, 661251520), (2, 330625760), (4, 165312880), (5, 132250304), (8, 82656440), (10, 66125152), (16, 41328220), (20, 33062576), (32, 20664110), (40, 16531288), (64, 10332055), (73, 9058240), (80, 8265644), (146, 4529120), (160, 4132822), (292, 2264560), (320, 2066411), (365, 1811648), (584, 1132280), (730, 905824), (1168, 566140), (1460, 452912), (2336, 283070), (2920, 226456), (4672, 141535), (5840, 113228), (11680, 56614), (23360, 28307)]