28973750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1783}}^1$

素因数の和:1818

約数の個数: 40

約数和(自身を含む): 58518768

約数和(自身を除く): 29545018

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 1783, 3250, 3566, 8125, 8915, 16250, 17830, 23179, 44575, 46358, 89150, 115895, 222875, 231790, 445750, 579475, 1114375, 1158950, 2228750, 2897375, 5794750, 14486875, 28973750]

約数ペア:

[(1, 28973750), (2, 14486875), (5, 5794750), (10, 2897375), (13, 2228750), (25, 1158950), (26, 1114375), (50, 579475), (65, 445750), (125, 231790), (130, 222875), (250, 115895), (325, 89150), (625, 46358), (650, 44575), (1250, 23179), (1625, 17830), (1783, 16250), (3250, 8915), (3566, 8125)]