21919460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2803}}^1$

素因数の和:2852

約数の個数: 48

約数和(自身を含む): 50875776

約数和(自身を除く): 28956316

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2803, 3910, 5606, 7820, 11212, 14015, 28030, 47651, 56060, 64469, 95302, 128938, 190604, 238255, 257876, 322345, 476510, 644690, 953020, 1095973, 1289380, 2191946, 4383892, 5479865, 10959730, 21919460]

約数ペア:

[(1, 21919460), (2, 10959730), (4, 5479865), (5, 4383892), (10, 2191946), (17, 1289380), (20, 1095973), (23, 953020), (34, 644690), (46, 476510), (68, 322345), (85, 257876), (92, 238255), (115, 190604), (170, 128938), (230, 95302), (340, 64469), (391, 56060), (460, 47651), (782, 28030), (1564, 14015), (1955, 11212), (2803, 7820), (3910, 5606)]