20500515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 40974336

約数和(自身を除く): 20473821

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 151, 315, 431, 453, 755, 1057, 1293, 1359, 2155, 2265, 3017, 3171, 3879, 5285, 6465, 6795, 9051, 9513, 15085, 15855, 19395, 27153, 45255, 47565, 65081, 135765, 195243, 325405, 455567, 585729, 976215, 1366701, 2277835, 2928645, 4100103, 6833505, 20500515]

約数ペア:

[(1, 20500515), (3, 6833505), (5, 4100103), (7, 2928645), (9, 2277835), (15, 1366701), (21, 976215), (35, 585729), (45, 455567), (63, 325405), (105, 195243), (151, 135765), (315, 65081), (431, 47565), (453, 45255), (755, 27153), (1057, 19395), (1293, 15855), (1359, 15085), (2155, 9513), (2265, 9051), (3017, 6795), (3171, 6465), (3879, 5285)]