28217000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:196

約数の個数: 128

約数和(自身を含む): 78624000

約数和(自身を除く): 50407000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 29, 35, 40, 50, 56, 58, 70, 100, 116, 125, 139, 140, 145, 175, 200, 203, 232, 250, 278, 280, 290, 350, 406, 500, 556, 580, 695, 700, 725, 812, 875, 973, 1000, 1015, 1112, 1160, 1390, 1400, 1450, 1624, 1750, 1946, 2030, 2780, 2900, 3475, 3500, 3625, 3892, 4031, 4060, 4865, 5075, 5560, 5800, 6950, 7000, 7250, 7784, 8062, 8120, 9730, 10150, 13900, 14500, 16124, 17375, 19460, 20155, 20300, 24325, 25375, 27800, 28217, 29000, 32248, 34750, 38920, 40310, 40600, 48650, 50750, 56434, 69500, 80620, 97300, 100775, 101500, 112868, 121625, 139000, 141085, 161240, 194600, 201550, 203000, 225736, 243250, 282170, 403100, 486500, 503875, 564340, 705425, 806200, 973000, 1007750, 1128680, 1410850, 2015500, 2821700, 3527125, 4031000, 5643400, 7054250, 14108500, 28217000]

約数ペア:

[(1, 28217000), (2, 14108500), (4, 7054250), (5, 5643400), (7, 4031000), (8, 3527125), (10, 2821700), (14, 2015500), (20, 1410850), (25, 1128680), (28, 1007750), (29, 973000), (35, 806200), (40, 705425), (50, 564340), (56, 503875), (58, 486500), (70, 403100), (100, 282170), (116, 243250), (125, 225736), (139, 203000), (140, 201550), (145, 194600), (175, 161240), (200, 141085), (203, 139000), (232, 121625), (250, 112868), (278, 101500), (280, 100775), (290, 97300), (350, 80620), (406, 69500), (500, 56434), (556, 50750), (580, 48650), (695, 40600), (700, 40310), (725, 38920), (812, 34750), (875, 32248), (973, 29000), (1000, 28217), (1015, 27800), (1112, 25375), (1160, 24325), (1390, 20300), (1400, 20155), (1450, 19460), (1624, 17375), (1750, 16124), (1946, 14500), (2030, 13900), (2780, 10150), (2900, 9730), (3475, 8120), (3500, 8062), (3625, 7784), (3892, 7250), (4031, 7000), (4060, 6950), (4865, 5800), (5075, 5560)]