21006400

素因数分解:

$2^6\times 5^2\times {\mathrm{19}}^1\times {\mathrm{691}}^1$

素因数の和:732

約数の個数: 84

約数和(自身を含む): 54488080

約数和(自身を除く): 33481680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 152, 160, 190, 200, 304, 320, 380, 400, 475, 608, 691, 760, 800, 950, 1216, 1382, 1520, 1600, 1900, 2764, 3040, 3455, 3800, 5528, 6080, 6910, 7600, 11056, 13129, 13820, 15200, 17275, 22112, 26258, 27640, 30400, 34550, 44224, 52516, 55280, 65645, 69100, 105032, 110560, 131290, 138200, 210064, 221120, 262580, 276400, 328225, 420128, 525160, 552800, 656450, 840256, 1050320, 1105600, 1312900, 2100640, 2625800, 4201280, 5251600, 10503200, 21006400]

約数ペア:

[(1, 21006400), (2, 10503200), (4, 5251600), (5, 4201280), (8, 2625800), (10, 2100640), (16, 1312900), (19, 1105600), (20, 1050320), (25, 840256), (32, 656450), (38, 552800), (40, 525160), (50, 420128), (64, 328225), (76, 276400), (80, 262580), (95, 221120), (100, 210064), (152, 138200), (160, 131290), (190, 110560), (200, 105032), (304, 69100), (320, 65645), (380, 55280), (400, 52516), (475, 44224), (608, 34550), (691, 30400), (760, 27640), (800, 26258), (950, 22112), (1216, 17275), (1382, 15200), (1520, 13820), (1600, 13129), (1900, 11056), (2764, 7600), (3040, 6910), (3455, 6080), (3800, 5528)]