20408700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5233}}^1$

素因数の和:5263

約数の個数: 72

約数和(自身を含む): 63603568

約数和(自身を除く): 43194868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5233, 10466, 15699, 20932, 26165, 31398, 52330, 62796, 68029, 78495, 104660, 130825, 136058, 156990, 204087, 261650, 272116, 313980, 340145, 392475, 408174, 523300, 680290, 784950, 816348, 1020435, 1360580, 1569900, 1700725, 2040870, 3401450, 4081740, 5102175, 6802900, 10204350, 20408700]

約数ペア:

[(1, 20408700), (2, 10204350), (3, 6802900), (4, 5102175), (5, 4081740), (6, 3401450), (10, 2040870), (12, 1700725), (13, 1569900), (15, 1360580), (20, 1020435), (25, 816348), (26, 784950), (30, 680290), (39, 523300), (50, 408174), (52, 392475), (60, 340145), (65, 313980), (75, 272116), (78, 261650), (100, 204087), (130, 156990), (150, 136058), (156, 130825), (195, 104660), (260, 78495), (300, 68029), (325, 62796), (390, 52330), (650, 31398), (780, 26165), (975, 20932), (1300, 15699), (1950, 10466), (3900, 5233)]