28320380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1181}}^1$

素因数の和:1310

約数の個数: 48

約数和(自身を含む): 65530080

約数和(自身を除く): 37209700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 1090, 1181, 1199, 2180, 2362, 2398, 4724, 4796, 5905, 5995, 11810, 11990, 12991, 23620, 23980, 25982, 51964, 64955, 128729, 129910, 257458, 259820, 514916, 643645, 1287290, 1416019, 2574580, 2832038, 5664076, 7080095, 14160190, 28320380]

約数ペア:

[(1, 28320380), (2, 14160190), (4, 7080095), (5, 5664076), (10, 2832038), (11, 2574580), (20, 1416019), (22, 1287290), (44, 643645), (55, 514916), (109, 259820), (110, 257458), (218, 129910), (220, 128729), (436, 64955), (545, 51964), (1090, 25982), (1181, 23980), (1199, 23620), (2180, 12991), (2362, 11990), (2398, 11810), (4724, 5995), (4796, 5905)]