20356562920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{8123}}^1$

素因数の和:8255

約数の個数: 128

約数和(自身を含む): 49414717440

約数和(自身を除く): 29058154520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 47, 62, 86, 94, 124, 155, 172, 188, 215, 235, 248, 310, 344, 376, 430, 470, 620, 860, 940, 1240, 1333, 1457, 1720, 1880, 2021, 2666, 2914, 4042, 5332, 5828, 6665, 7285, 8084, 8123, 10105, 10664, 11656, 13330, 14570, 16168, 16246, 20210, 26660, 29140, 32492, 40420, 40615, 53320, 58280, 62651, 64984, 80840, 81230, 125302, 162460, 250604, 251813, 313255, 324920, 349289, 381781, 501208, 503626, 626510, 698578, 763562, 1007252, 1253020, 1259065, 1397156, 1527124, 1746445, 1908905, 2014504, 2506040, 2518130, 2794312, 3054248, 3492890, 3817810, 5036260, 6985780, 7635620, 10072520, 10827959, 11835211, 13971560, 15271240, 16416583, 21655918, 23670422, 32833166, 43311836, 47340844, 54139795, 59176055, 65666332, 82082915, 86623672, 94681688, 108279590, 118352110, 131332664, 164165830, 216559180, 236704220, 328331660, 433118360, 473408440, 508914073, 656663320, 1017828146, 2035656292, 2544570365, 4071312584, 5089140730, 10178281460, 20356562920]

約数ペア:

[(1, 20356562920), (2, 10178281460), (4, 5089140730), (5, 4071312584), (8, 2544570365), (10, 2035656292), (20, 1017828146), (31, 656663320), (40, 508914073), (43, 473408440), (47, 433118360), (62, 328331660), (86, 236704220), (94, 216559180), (124, 164165830), (155, 131332664), (172, 118352110), (188, 108279590), (215, 94681688), (235, 86623672), (248, 82082915), (310, 65666332), (344, 59176055), (376, 54139795), (430, 47340844), (470, 43311836), (620, 32833166), (860, 23670422), (940, 21655918), (1240, 16416583), (1333, 15271240), (1457, 13971560), (1720, 11835211), (1880, 10827959), (2021, 10072520), (2666, 7635620), (2914, 6985780), (4042, 5036260), (5332, 3817810), (5828, 3492890), (6665, 3054248), (7285, 2794312), (8084, 2518130), (8123, 2506040), (10105, 2014504), (10664, 1908905), (11656, 1746445), (13330, 1527124), (14570, 1397156), (16168, 1259065), (16246, 1253020), (20210, 1007252), (26660, 763562), (29140, 698578), (32492, 626510), (40420, 503626), (40615, 501208), (53320, 381781), (58280, 349289), (62651, 324920), (64984, 313255), (80840, 251813), (81230, 250604), (125302, 162460)]