20817810

素因数分解:

$2^1\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1$

素因数の和:694

約数の個数: 96

約数和(自身を含む): 60540480

約数和(自身を除く): 39722670

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 195, 234, 243, 270, 351, 390, 405, 486, 585, 659, 702, 810, 1053, 1170, 1215, 1318, 1755, 1977, 2106, 2430, 3159, 3295, 3510, 3954, 5265, 5931, 6318, 6590, 8567, 9885, 10530, 11862, 15795, 17134, 17793, 19770, 25701, 29655, 31590, 35586, 42835, 51402, 53379, 59310, 77103, 85670, 88965, 106758, 128505, 154206, 160137, 177930, 231309, 257010, 266895, 320274, 385515, 462618, 533790, 693927, 771030, 800685, 1156545, 1387854, 1601370, 2081781, 2313090, 3469635, 4163562, 6939270, 10408905, 20817810]

約数ペア:

[(1, 20817810), (2, 10408905), (3, 6939270), (5, 4163562), (6, 3469635), (9, 2313090), (10, 2081781), (13, 1601370), (15, 1387854), (18, 1156545), (26, 800685), (27, 771030), (30, 693927), (39, 533790), (45, 462618), (54, 385515), (65, 320274), (78, 266895), (81, 257010), (90, 231309), (117, 177930), (130, 160137), (135, 154206), (162, 128505), (195, 106758), (234, 88965), (243, 85670), (270, 77103), (351, 59310), (390, 53379), (405, 51402), (486, 42835), (585, 35586), (659, 31590), (702, 29655), (810, 25701), (1053, 19770), (1170, 17793), (1215, 17134), (1318, 15795), (1755, 11862), (1977, 10530), (2106, 9885), (2430, 8567), (3159, 6590), (3295, 6318), (3510, 5931), (3954, 5265)]