19919625

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^2\times {\mathrm{439}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 36516480

約数和(自身を除く): 16596855

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 125, 165, 275, 363, 375, 439, 605, 825, 1317, 1375, 1815, 2195, 3025, 4125, 4829, 6585, 9075, 10975, 14487, 15125, 24145, 32925, 45375, 53119, 54875, 72435, 120725, 159357, 164625, 265595, 362175, 603625, 796785, 1327975, 1810875, 3983925, 6639875, 19919625]

約数ペア:

[(1, 19919625), (3, 6639875), (5, 3983925), (11, 1810875), (15, 1327975), (25, 796785), (33, 603625), (55, 362175), (75, 265595), (121, 164625), (125, 159357), (165, 120725), (275, 72435), (363, 54875), (375, 53119), (439, 45375), (605, 32925), (825, 24145), (1317, 15125), (1375, 14487), (1815, 10975), (2195, 9075), (3025, 6585), (4125, 4829)]