21520300

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{12659}}^1$

素因数の和:12690

約数の個数: 36

約数和(自身を含む): 49449960

約数和(自身を除く): 27929660

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 340, 425, 850, 1700, 12659, 25318, 50636, 63295, 126590, 215203, 253180, 316475, 430406, 632950, 860812, 1076015, 1265900, 2152030, 4304060, 5380075, 10760150, 21520300]

約数ペア:

[(1, 21520300), (2, 10760150), (4, 5380075), (5, 4304060), (10, 2152030), (17, 1265900), (20, 1076015), (25, 860812), (34, 632950), (50, 430406), (68, 316475), (85, 253180), (100, 215203), (170, 126590), (340, 63295), (425, 50636), (850, 25318), (1700, 12659)]