20900330

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{751}}^1$

素因数の和:803

約数の個数: 48

約数和(自身を含む): 43206912

約数和(自身を除く): 22306582

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 121, 230, 242, 253, 506, 605, 751, 1210, 1265, 1502, 2530, 2783, 3755, 5566, 7510, 8261, 13915, 16522, 17273, 27830, 34546, 41305, 82610, 86365, 90871, 172730, 181742, 190003, 380006, 454355, 908710, 950015, 1900030, 2090033, 4180066, 10450165, 20900330]

約数ペア:

[(1, 20900330), (2, 10450165), (5, 4180066), (10, 2090033), (11, 1900030), (22, 950015), (23, 908710), (46, 454355), (55, 380006), (110, 190003), (115, 181742), (121, 172730), (230, 90871), (242, 86365), (253, 82610), (506, 41305), (605, 34546), (751, 27830), (1210, 17273), (1265, 16522), (1502, 13915), (2530, 8261), (2783, 7510), (3755, 5566)]