20436220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2393}}^1$

素因数の和:2470

約数の個数: 48

約数和(自身を含む): 49871808

約数和(自身を除く): 29435588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2393, 4270, 4786, 8540, 9572, 11965, 16751, 23930, 33502, 47860, 67004, 83755, 145973, 167510, 291946, 335020, 583892, 729865, 1021811, 1459730, 2043622, 2919460, 4087244, 5109055, 10218110, 20436220]

約数ペア:

[(1, 20436220), (2, 10218110), (4, 5109055), (5, 4087244), (7, 2919460), (10, 2043622), (14, 1459730), (20, 1021811), (28, 729865), (35, 583892), (61, 335020), (70, 291946), (122, 167510), (140, 145973), (244, 83755), (305, 67004), (427, 47860), (610, 33502), (854, 23930), (1220, 16751), (1708, 11965), (2135, 9572), (2393, 8540), (4270, 4786)]