20356695

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 38469600

約数和(自身を除く): 18112905

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 261, 285, 435, 551, 821, 855, 1305, 1653, 2463, 2755, 4105, 4959, 7389, 8265, 12315, 15599, 23809, 24795, 36945, 46797, 71427, 77995, 119045, 140391, 214281, 233985, 357135, 452371, 701955, 1071405, 1357113, 2261855, 4071339, 6785565, 20356695]

約数ペア:

[(1, 20356695), (3, 6785565), (5, 4071339), (9, 2261855), (15, 1357113), (19, 1071405), (29, 701955), (45, 452371), (57, 357135), (87, 233985), (95, 214281), (145, 140391), (171, 119045), (261, 77995), (285, 71427), (435, 46797), (551, 36945), (821, 24795), (855, 23809), (1305, 15599), (1653, 12315), (2463, 8265), (2755, 7389), (4105, 4959)]