21690380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{773}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 48371904

約数和(自身を除く): 26681524

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 61, 92, 115, 122, 230, 244, 305, 460, 610, 773, 1220, 1403, 1546, 2806, 3092, 3865, 5612, 7015, 7730, 14030, 15460, 17779, 28060, 35558, 47153, 71116, 88895, 94306, 177790, 188612, 235765, 355580, 471530, 943060, 1084519, 2169038, 4338076, 5422595, 10845190, 21690380]

約数ペア:

[(1, 21690380), (2, 10845190), (4, 5422595), (5, 4338076), (10, 2169038), (20, 1084519), (23, 943060), (46, 471530), (61, 355580), (92, 235765), (115, 188612), (122, 177790), (230, 94306), (244, 88895), (305, 71116), (460, 47153), (610, 35558), (773, 28060), (1220, 17779), (1403, 15460), (1546, 14030), (2806, 7730), (3092, 7015), (3865, 5612)]