20907900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1787}}^1$

素因数の和:1820

約数の個数: 108

約数和(自身を含む): 70615272

約数和(自身を除く): 49707372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 25, 26, 30, 36, 39, 45, 50, 52, 60, 65, 75, 78, 90, 100, 117, 130, 150, 156, 180, 195, 225, 234, 260, 300, 325, 390, 450, 468, 585, 650, 780, 900, 975, 1170, 1300, 1787, 1950, 2340, 2925, 3574, 3900, 5361, 5850, 7148, 8935, 10722, 11700, 16083, 17870, 21444, 23231, 26805, 32166, 35740, 44675, 46462, 53610, 64332, 69693, 80415, 89350, 92924, 107220, 116155, 134025, 139386, 160830, 178700, 209079, 232310, 268050, 278772, 321660, 348465, 402075, 418158, 464620, 536100, 580775, 696930, 804150, 836316, 1045395, 1161550, 1393860, 1608300, 1742325, 2090790, 2323100, 3484650, 4181580, 5226975, 6969300, 10453950, 20907900]

約数ペア:

[(1, 20907900), (2, 10453950), (3, 6969300), (4, 5226975), (5, 4181580), (6, 3484650), (9, 2323100), (10, 2090790), (12, 1742325), (13, 1608300), (15, 1393860), (18, 1161550), (20, 1045395), (25, 836316), (26, 804150), (30, 696930), (36, 580775), (39, 536100), (45, 464620), (50, 418158), (52, 402075), (60, 348465), (65, 321660), (75, 278772), (78, 268050), (90, 232310), (100, 209079), (117, 178700), (130, 160830), (150, 139386), (156, 134025), (180, 116155), (195, 107220), (225, 92924), (234, 89350), (260, 80415), (300, 69693), (325, 64332), (390, 53610), (450, 46462), (468, 44675), (585, 35740), (650, 32166), (780, 26805), (900, 23231), (975, 21444), (1170, 17870), (1300, 16083), (1787, 11700), (1950, 10722), (2340, 8935), (2925, 7148), (3574, 5850), (3900, 5361)]