20731100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 29140708

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 37, 50, 52, 65, 74, 100, 130, 148, 185, 260, 325, 370, 431, 481, 650, 740, 862, 925, 962, 1300, 1724, 1850, 1924, 2155, 2405, 3700, 4310, 4810, 5603, 8620, 9620, 10775, 11206, 12025, 15947, 21550, 22412, 24050, 28015, 31894, 43100, 48100, 56030, 63788, 79735, 112060, 140075, 159470, 207311, 280150, 318940, 398675, 414622, 560300, 797350, 829244, 1036555, 1594700, 2073110, 4146220, 5182775, 10365550, 20731100]

約数ペア:

[(1, 20731100), (2, 10365550), (4, 5182775), (5, 4146220), (10, 2073110), (13, 1594700), (20, 1036555), (25, 829244), (26, 797350), (37, 560300), (50, 414622), (52, 398675), (65, 318940), (74, 280150), (100, 207311), (130, 159470), (148, 140075), (185, 112060), (260, 79735), (325, 63788), (370, 56030), (431, 48100), (481, 43100), (650, 31894), (740, 28015), (862, 24050), (925, 22412), (962, 21550), (1300, 15947), (1724, 12025), (1850, 11206), (1924, 10775), (2155, 9620), (2405, 8620), (3700, 5603), (4310, 4810)]