19942120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:826

約数の個数: 64

約数和(自身を含む): 49818240

約数和(自身を除く): 29876120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 743, 1220, 1342, 1486, 2440, 2684, 2972, 3355, 3715, 5368, 5944, 6710, 7430, 8173, 13420, 14860, 16346, 26840, 29720, 32692, 40865, 45323, 65384, 81730, 90646, 163460, 181292, 226615, 326920, 362584, 453230, 498553, 906460, 997106, 1812920, 1994212, 2492765, 3988424, 4985530, 9971060, 19942120]

約数ペア:

[(1, 19942120), (2, 9971060), (4, 4985530), (5, 3988424), (8, 2492765), (10, 1994212), (11, 1812920), (20, 997106), (22, 906460), (40, 498553), (44, 453230), (55, 362584), (61, 326920), (88, 226615), (110, 181292), (122, 163460), (220, 90646), (244, 81730), (305, 65384), (440, 45323), (488, 40865), (610, 32692), (671, 29720), (743, 26840), (1220, 16346), (1342, 14860), (1486, 13420), (2440, 8173), (2684, 7430), (2972, 6710), (3355, 5944), (3715, 5368)]