20996250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{509}}^1$

素因数の和:545

約数の個数: 80

約数和(自身を含む): 57356640

約数和(自身を除く): 36360390

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 25, 30, 33, 50, 55, 66, 75, 110, 125, 150, 165, 250, 275, 330, 375, 509, 550, 625, 750, 825, 1018, 1250, 1375, 1527, 1650, 1875, 2545, 2750, 3054, 3750, 4125, 5090, 5599, 6875, 7635, 8250, 11198, 12725, 13750, 15270, 16797, 20625, 25450, 27995, 33594, 38175, 41250, 55990, 63625, 76350, 83985, 127250, 139975, 167970, 190875, 279950, 318125, 381750, 419925, 636250, 699875, 839850, 954375, 1399750, 1908750, 2099625, 3499375, 4199250, 6998750, 10498125, 20996250]

約数ペア:

[(1, 20996250), (2, 10498125), (3, 6998750), (5, 4199250), (6, 3499375), (10, 2099625), (11, 1908750), (15, 1399750), (22, 954375), (25, 839850), (30, 699875), (33, 636250), (50, 419925), (55, 381750), (66, 318125), (75, 279950), (110, 190875), (125, 167970), (150, 139975), (165, 127250), (250, 83985), (275, 76350), (330, 63625), (375, 55990), (509, 41250), (550, 38175), (625, 33594), (750, 27995), (825, 25450), (1018, 20625), (1250, 16797), (1375, 15270), (1527, 13750), (1650, 12725), (1875, 11198), (2545, 8250), (2750, 7635), (3054, 6875), (3750, 5599), (4125, 5090)]