20348720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:235

約数の個数: 120

約数和(自身を含む): 57250800

約数和(自身を除く): 36902080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 179, 196, 203, 232, 245, 280, 290, 358, 392, 406, 464, 490, 560, 580, 716, 784, 812, 895, 980, 1015, 1160, 1253, 1421, 1432, 1624, 1790, 1960, 2030, 2320, 2506, 2842, 2864, 3248, 3580, 3920, 4060, 5012, 5191, 5684, 6265, 7105, 7160, 8120, 8771, 10024, 10382, 11368, 12530, 14210, 14320, 16240, 17542, 20048, 20764, 22736, 25060, 25955, 28420, 35084, 36337, 41528, 43855, 50120, 51910, 56840, 70168, 72674, 83056, 87710, 100240, 103820, 113680, 140336, 145348, 175420, 181685, 207640, 254359, 290696, 350840, 363370, 415280, 508718, 581392, 701680, 726740, 1017436, 1271795, 1453480, 2034872, 2543590, 2906960, 4069744, 5087180, 10174360, 20348720]

約数ペア:

[(1, 20348720), (2, 10174360), (4, 5087180), (5, 4069744), (7, 2906960), (8, 2543590), (10, 2034872), (14, 1453480), (16, 1271795), (20, 1017436), (28, 726740), (29, 701680), (35, 581392), (40, 508718), (49, 415280), (56, 363370), (58, 350840), (70, 290696), (80, 254359), (98, 207640), (112, 181685), (116, 175420), (140, 145348), (145, 140336), (179, 113680), (196, 103820), (203, 100240), (232, 87710), (245, 83056), (280, 72674), (290, 70168), (358, 56840), (392, 51910), (406, 50120), (464, 43855), (490, 41528), (560, 36337), (580, 35084), (716, 28420), (784, 25955), (812, 25060), (895, 22736), (980, 20764), (1015, 20048), (1160, 17542), (1253, 16240), (1421, 14320), (1432, 14210), (1624, 12530), (1790, 11368), (1960, 10382), (2030, 10024), (2320, 8771), (2506, 8120), (2842, 7160), (2864, 7105), (3248, 6265), (3580, 5684), (3920, 5191), (4060, 5012)]