18200140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1831}}^1$

素因数の和:1918

約数の個数: 48

約数和(自身を含む): 44319744

約数和(自身を除く): 26119604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1831, 1988, 2485, 3662, 4970, 7324, 9155, 9940, 12817, 18310, 25634, 36620, 51268, 64085, 128170, 130001, 256340, 260002, 520004, 650005, 910007, 1300010, 1820014, 2600020, 3640028, 4550035, 9100070, 18200140]

約数ペア:

[(1, 18200140), (2, 9100070), (4, 4550035), (5, 3640028), (7, 2600020), (10, 1820014), (14, 1300010), (20, 910007), (28, 650005), (35, 520004), (70, 260002), (71, 256340), (140, 130001), (142, 128170), (284, 64085), (355, 51268), (497, 36620), (710, 25634), (994, 18310), (1420, 12817), (1831, 9940), (1988, 9155), (2485, 7324), (3662, 4970)]