21387114

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{631}}^1$

素因数の和:915

約数の個数: 48

約数和(自身を含む): 53239680

約数和(自身を除く): 31852566

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 269, 538, 631, 807, 1262, 1614, 1883, 1893, 2421, 3766, 3786, 4417, 4842, 5649, 5679, 8834, 11298, 11358, 13251, 16947, 26502, 33894, 39753, 79506, 169739, 339478, 509217, 1018434, 1188173, 1527651, 2376346, 3055302, 3564519, 7129038, 10693557, 21387114]

約数ペア:

[(1, 21387114), (2, 10693557), (3, 7129038), (6, 3564519), (7, 3055302), (9, 2376346), (14, 1527651), (18, 1188173), (21, 1018434), (42, 509217), (63, 339478), (126, 169739), (269, 79506), (538, 39753), (631, 33894), (807, 26502), (1262, 16947), (1614, 13251), (1883, 11358), (1893, 11298), (2421, 8834), (3766, 5679), (3786, 5649), (4417, 4842)]