20675550

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:155

約数の個数: 144

約数和(自身を含む): 62339760

約数和(自身を除く): 41664210

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 29, 30, 35, 42, 49, 50, 58, 70, 75, 87, 97, 98, 105, 145, 147, 150, 174, 175, 194, 203, 210, 245, 290, 291, 294, 350, 406, 435, 485, 490, 525, 582, 609, 679, 725, 735, 870, 970, 1015, 1050, 1218, 1225, 1358, 1421, 1450, 1455, 1470, 2030, 2037, 2175, 2425, 2450, 2813, 2842, 2910, 3045, 3395, 3675, 4074, 4263, 4350, 4753, 4850, 5075, 5626, 6090, 6790, 7105, 7275, 7350, 8439, 8526, 9506, 10150, 10185, 14065, 14210, 14259, 14550, 15225, 16878, 16975, 19691, 20370, 21315, 23765, 28130, 28518, 30450, 33950, 35525, 39382, 42195, 42630, 47530, 50925, 59073, 70325, 71050, 71295, 84390, 98455, 101850, 106575, 118146, 118825, 137837, 140650, 142590, 196910, 210975, 213150, 237650, 275674, 295365, 356475, 413511, 421950, 492275, 590730, 689185, 712950, 827022, 984550, 1378370, 1476825, 2067555, 2953650, 3445925, 4135110, 6891850, 10337775, 20675550]

約数ペア:

[(1, 20675550), (2, 10337775), (3, 6891850), (5, 4135110), (6, 3445925), (7, 2953650), (10, 2067555), (14, 1476825), (15, 1378370), (21, 984550), (25, 827022), (29, 712950), (30, 689185), (35, 590730), (42, 492275), (49, 421950), (50, 413511), (58, 356475), (70, 295365), (75, 275674), (87, 237650), (97, 213150), (98, 210975), (105, 196910), (145, 142590), (147, 140650), (150, 137837), (174, 118825), (175, 118146), (194, 106575), (203, 101850), (210, 98455), (245, 84390), (290, 71295), (291, 71050), (294, 70325), (350, 59073), (406, 50925), (435, 47530), (485, 42630), (490, 42195), (525, 39382), (582, 35525), (609, 33950), (679, 30450), (725, 28518), (735, 28130), (870, 23765), (970, 21315), (1015, 20370), (1050, 19691), (1218, 16975), (1225, 16878), (1358, 15225), (1421, 14550), (1450, 14259), (1455, 14210), (1470, 14065), (2030, 10185), (2037, 10150), (2175, 9506), (2425, 8526), (2450, 8439), (2813, 7350), (2842, 7275), (2910, 7105), (3045, 6790), (3395, 6090), (3675, 5626), (4074, 5075), (4263, 4850), (4350, 4753)]