71220520

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:240

約数の個数: 128

約数和(自身を含む): 194400000

約数和(自身を除く): 123179480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 179, 196, 203, 232, 245, 280, 290, 343, 358, 392, 406, 490, 580, 686, 716, 812, 895, 980, 1015, 1160, 1253, 1372, 1421, 1432, 1624, 1715, 1790, 1960, 2030, 2506, 2744, 2842, 3430, 3580, 4060, 5012, 5191, 5684, 6265, 6860, 7105, 7160, 8120, 8771, 9947, 10024, 10382, 11368, 12530, 13720, 14210, 17542, 19894, 20764, 25060, 25955, 28420, 35084, 36337, 39788, 41528, 43855, 49735, 50120, 51910, 56840, 61397, 70168, 72674, 79576, 87710, 99470, 103820, 122794, 145348, 175420, 181685, 198940, 207640, 245588, 254359, 290696, 306985, 350840, 363370, 397880, 491176, 508718, 613970, 726740, 1017436, 1227940, 1271795, 1453480, 1780513, 2034872, 2455880, 2543590, 3561026, 5087180, 7122052, 8902565, 10174360, 14244104, 17805130, 35610260, 71220520]

約数ペア:

[(1, 71220520), (2, 35610260), (4, 17805130), (5, 14244104), (7, 10174360), (8, 8902565), (10, 7122052), (14, 5087180), (20, 3561026), (28, 2543590), (29, 2455880), (35, 2034872), (40, 1780513), (49, 1453480), (56, 1271795), (58, 1227940), (70, 1017436), (98, 726740), (116, 613970), (140, 508718), (145, 491176), (179, 397880), (196, 363370), (203, 350840), (232, 306985), (245, 290696), (280, 254359), (290, 245588), (343, 207640), (358, 198940), (392, 181685), (406, 175420), (490, 145348), (580, 122794), (686, 103820), (716, 99470), (812, 87710), (895, 79576), (980, 72674), (1015, 70168), (1160, 61397), (1253, 56840), (1372, 51910), (1421, 50120), (1432, 49735), (1624, 43855), (1715, 41528), (1790, 39788), (1960, 36337), (2030, 35084), (2506, 28420), (2744, 25955), (2842, 25060), (3430, 20764), (3580, 19894), (4060, 17542), (5012, 14210), (5191, 13720), (5684, 12530), (6265, 11368), (6860, 10382), (7105, 10024), (7160, 9947), (8120, 8771)]