20819770

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:402

約数の個数: 32

約数和(自身を含む): 38394000

約数和(自身を除く): 17574230

約数列:

[1, 2, 5, 10, 89, 149, 157, 178, 298, 314, 445, 745, 785, 890, 1490, 1570, 13261, 13973, 23393, 26522, 27946, 46786, 66305, 69865, 116965, 132610, 139730, 233930, 2081977, 4163954, 10409885, 20819770]

約数ペア:

[(1, 20819770), (2, 10409885), (5, 4163954), (10, 2081977), (89, 233930), (149, 139730), (157, 132610), (178, 116965), (298, 69865), (314, 66305), (445, 46786), (745, 27946), (785, 26522), (890, 23393), (1490, 13973), (1570, 13261)]