21067425

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^2\times {\mathrm{59}}^1$

素因数の和:124

約数の個数: 72

約数和(自身を含む): 41143200

約数和(自身を除く): 20075775

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 59, 69, 75, 115, 135, 177, 207, 225, 295, 345, 529, 531, 575, 621, 675, 885, 1035, 1357, 1475, 1587, 1593, 1725, 2645, 2655, 3105, 4071, 4425, 4761, 5175, 6785, 7935, 7965, 12213, 13225, 13275, 14283, 15525, 20355, 23805, 31211, 33925, 36639, 39675, 39825, 61065, 71415, 93633, 101775, 119025, 156055, 183195, 280899, 305325, 357075, 468165, 780275, 842697, 915975, 1404495, 2340825, 4213485, 7022475, 21067425]

約数ペア:

[(1, 21067425), (3, 7022475), (5, 4213485), (9, 2340825), (15, 1404495), (23, 915975), (25, 842697), (27, 780275), (45, 468165), (59, 357075), (69, 305325), (75, 280899), (115, 183195), (135, 156055), (177, 119025), (207, 101775), (225, 93633), (295, 71415), (345, 61065), (529, 39825), (531, 39675), (575, 36639), (621, 33925), (675, 31211), (885, 23805), (1035, 20355), (1357, 15525), (1475, 14283), (1587, 13275), (1593, 13225), (1725, 12213), (2645, 7965), (2655, 7935), (3105, 6785), (4071, 5175), (4425, 4761)]