78531700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{313}}^1$

素因数の和:533

約数の個数: 72

約数和(自身を含む): 185062808

約数和(自身を除く): 106531108

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 193, 260, 313, 325, 386, 626, 650, 772, 965, 1252, 1300, 1565, 1930, 2509, 3130, 3860, 4069, 4825, 5018, 6260, 7825, 8138, 9650, 10036, 12545, 15650, 16276, 19300, 20345, 25090, 31300, 40690, 50180, 60409, 62725, 81380, 101725, 120818, 125450, 203450, 241636, 250900, 302045, 406900, 604090, 785317, 1208180, 1510225, 1570634, 3020450, 3141268, 3926585, 6040900, 7853170, 15706340, 19632925, 39265850, 78531700]

約数ペア:

[(1, 78531700), (2, 39265850), (4, 19632925), (5, 15706340), (10, 7853170), (13, 6040900), (20, 3926585), (25, 3141268), (26, 3020450), (50, 1570634), (52, 1510225), (65, 1208180), (100, 785317), (130, 604090), (193, 406900), (260, 302045), (313, 250900), (325, 241636), (386, 203450), (626, 125450), (650, 120818), (772, 101725), (965, 81380), (1252, 62725), (1300, 60409), (1565, 50180), (1930, 40690), (2509, 31300), (3130, 25090), (3860, 20345), (4069, 19300), (4825, 16276), (5018, 15650), (6260, 12545), (7825, 10036), (8138, 9650)]