261407580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{622399}}^1$

素因数の和:622418

約数の個数: 48

約数和(自身を含む): 836505600

約数和(自身を除く): 575098020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 622399, 1244798, 1867197, 2489596, 3111995, 3734394, 4356793, 6223990, 7468788, 8713586, 9335985, 12447980, 13070379, 17427172, 18671970, 21783965, 26140758, 37343940, 43567930, 52281516, 65351895, 87135860, 130703790, 261407580]

約数ペア:

[(1, 261407580), (2, 130703790), (3, 87135860), (4, 65351895), (5, 52281516), (6, 43567930), (7, 37343940), (10, 26140758), (12, 21783965), (14, 18671970), (15, 17427172), (20, 13070379), (21, 12447980), (28, 9335985), (30, 8713586), (35, 7468788), (42, 6223990), (60, 4356793), (70, 3734394), (84, 3111995), (105, 2489596), (140, 1867197), (210, 1244798), (420, 622399)]