20537120

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2731}}^1$

素因数の和:2793

約数の個数: 48

約数和(自身を含む): 49569408

約数和(自身を除く): 29032288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2731, 3760, 5462, 7520, 10924, 13655, 21848, 27310, 43696, 54620, 87392, 109240, 128357, 218480, 256714, 436960, 513428, 641785, 1026856, 1283570, 2053712, 2567140, 4107424, 5134280, 10268560, 20537120]

約数ペア:

[(1, 20537120), (2, 10268560), (4, 5134280), (5, 4107424), (8, 2567140), (10, 2053712), (16, 1283570), (20, 1026856), (32, 641785), (40, 513428), (47, 436960), (80, 256714), (94, 218480), (160, 128357), (188, 109240), (235, 87392), (376, 54620), (470, 43696), (752, 27310), (940, 21848), (1504, 13655), (1880, 10924), (2731, 7520), (3760, 5462)]