20070320

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 80

約数和(自身を含む): 49684320

約数和(自身を除く): 29614000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 41, 58, 80, 82, 116, 145, 164, 205, 211, 232, 290, 328, 410, 422, 464, 580, 656, 820, 844, 1055, 1160, 1189, 1640, 1688, 2110, 2320, 2378, 3280, 3376, 4220, 4756, 5945, 6119, 8440, 8651, 9512, 11890, 12238, 16880, 17302, 19024, 23780, 24476, 30595, 34604, 43255, 47560, 48952, 61190, 69208, 86510, 95120, 97904, 122380, 138416, 173020, 244760, 250879, 346040, 489520, 501758, 692080, 1003516, 1254395, 2007032, 2508790, 4014064, 5017580, 10035160, 20070320]

約数ペア:

[(1, 20070320), (2, 10035160), (4, 5017580), (5, 4014064), (8, 2508790), (10, 2007032), (16, 1254395), (20, 1003516), (29, 692080), (40, 501758), (41, 489520), (58, 346040), (80, 250879), (82, 244760), (116, 173020), (145, 138416), (164, 122380), (205, 97904), (211, 95120), (232, 86510), (290, 69208), (328, 61190), (410, 48952), (422, 47560), (464, 43255), (580, 34604), (656, 30595), (820, 24476), (844, 23780), (1055, 19024), (1160, 17302), (1189, 16880), (1640, 12238), (1688, 11890), (2110, 9512), (2320, 8651), (2378, 8440), (3280, 6119), (3376, 5945), (4220, 4756)]