80280980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{308773}}^1$

素因数の和:308795

約数の個数: 24

約数和(自身を含む): 181559112

約数和(自身を除く): 101278132

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 308773, 617546, 1235092, 1543865, 3087730, 4014049, 6175460, 8028098, 16056196, 20070245, 40140490, 80280980]

約数ペア:

[(1, 80280980), (2, 40140490), (4, 20070245), (5, 16056196), (10, 8028098), (13, 6175460), (20, 4014049), (26, 3087730), (52, 1543865), (65, 1235092), (130, 617546), (260, 308773)]