20172688000

素因数分解:

$2^7\times 5^3\times {\mathrm{509}}^1\times {\mathrm{2477}}^1$

素因数の和:3015

約数の個数: 128

約数和(自身を含む): 50273168400

約数和(自身を除く): 30100480400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 509, 640, 800, 1000, 1018, 1600, 2000, 2036, 2477, 2545, 3200, 4000, 4072, 4954, 5090, 8000, 8144, 9908, 10180, 12385, 12725, 16000, 16288, 19816, 20360, 24770, 25450, 32576, 39632, 40720, 49540, 50900, 61925, 63625, 65152, 79264, 81440, 99080, 101800, 123850, 127250, 158528, 162880, 198160, 203600, 247700, 254500, 309625, 317056, 325760, 396320, 407200, 495400, 509000, 619250, 792640, 814400, 990800, 1018000, 1238500, 1260793, 1585280, 1628800, 1981600, 2036000, 2477000, 2521586, 3963200, 4072000, 4954000, 5043172, 6303965, 7926400, 8144000, 9908000, 10086344, 12607930, 19816000, 20172688, 25215860, 31519825, 39632000, 40345376, 50431720, 63039650, 80690752, 100863440, 126079300, 157599125, 161381504, 201726880, 252158600, 315198250, 403453760, 504317200, 630396500, 806907520, 1008634400, 1260793000, 2017268800, 2521586000, 4034537600, 5043172000, 10086344000, 20172688000]

約数ペア:

[(1, 20172688000), (2, 10086344000), (4, 5043172000), (5, 4034537600), (8, 2521586000), (10, 2017268800), (16, 1260793000), (20, 1008634400), (25, 806907520), (32, 630396500), (40, 504317200), (50, 403453760), (64, 315198250), (80, 252158600), (100, 201726880), (125, 161381504), (128, 157599125), (160, 126079300), (200, 100863440), (250, 80690752), (320, 63039650), (400, 50431720), (500, 40345376), (509, 39632000), (640, 31519825), (800, 25215860), (1000, 20172688), (1018, 19816000), (1600, 12607930), (2000, 10086344), (2036, 9908000), (2477, 8144000), (2545, 7926400), (3200, 6303965), (4000, 5043172), (4072, 4954000), (4954, 4072000), (5090, 3963200), (8000, 2521586), (8144, 2477000), (9908, 2036000), (10180, 1981600), (12385, 1628800), (12725, 1585280), (16000, 1260793), (16288, 1238500), (19816, 1018000), (20360, 990800), (24770, 814400), (25450, 792640), (32576, 619250), (39632, 509000), (40720, 495400), (49540, 407200), (50900, 396320), (61925, 325760), (63625, 317056), (65152, 309625), (79264, 254500), (81440, 247700), (99080, 203600), (101800, 198160), (123850, 162880), (127250, 158528)]