18909954

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{673}}^1$

素因数の和:911

約数の個数: 48

約数和(自身を含む): 47104512

約数和(自身を除く): 28194558

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 223, 446, 669, 673, 1338, 1346, 1561, 2007, 2019, 3122, 4014, 4038, 4683, 4711, 6057, 9366, 9422, 12114, 14049, 14133, 28098, 28266, 42399, 84798, 150079, 300158, 450237, 900474, 1050553, 1350711, 2101106, 2701422, 3151659, 6303318, 9454977, 18909954]

約数ペア:

[(1, 18909954), (2, 9454977), (3, 6303318), (6, 3151659), (7, 2701422), (9, 2101106), (14, 1350711), (18, 1050553), (21, 900474), (42, 450237), (63, 300158), (126, 150079), (223, 84798), (446, 42399), (669, 28266), (673, 28098), (1338, 14133), (1346, 14049), (1561, 12114), (2007, 9422), (2019, 9366), (3122, 6057), (4014, 4711), (4038, 4683)]