20515250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 46275840

約数和(自身を除く): 25760590

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 50, 70, 95, 125, 133, 175, 190, 250, 266, 350, 475, 617, 665, 875, 950, 1234, 1330, 1750, 2375, 3085, 3325, 4319, 4750, 6170, 6650, 8638, 11723, 15425, 16625, 21595, 23446, 30850, 33250, 43190, 58615, 77125, 82061, 107975, 117230, 154250, 164122, 215950, 293075, 410305, 539875, 586150, 820610, 1079750, 1465375, 2051525, 2930750, 4103050, 10257625, 20515250]

約数ペア:

[(1, 20515250), (2, 10257625), (5, 4103050), (7, 2930750), (10, 2051525), (14, 1465375), (19, 1079750), (25, 820610), (35, 586150), (38, 539875), (50, 410305), (70, 293075), (95, 215950), (125, 164122), (133, 154250), (175, 117230), (190, 107975), (250, 82061), (266, 77125), (350, 58615), (475, 43190), (617, 33250), (665, 30850), (875, 23446), (950, 21595), (1234, 16625), (1330, 15425), (1750, 11723), (2375, 8638), (3085, 6650), (3325, 6170), (4319, 4750)]