72164920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{557}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 168739200

約数和(自身を除く): 96574280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 79, 82, 158, 164, 205, 316, 328, 395, 410, 557, 632, 790, 820, 1114, 1580, 1640, 2228, 2785, 3160, 3239, 4456, 5570, 6478, 11140, 12956, 16195, 22280, 22837, 25912, 32390, 44003, 45674, 64780, 88006, 91348, 114185, 129560, 176012, 182696, 220015, 228370, 352024, 440030, 456740, 880060, 913480, 1760120, 1804123, 3608246, 7216492, 9020615, 14432984, 18041230, 36082460, 72164920]

約数ペア:

[(1, 72164920), (2, 36082460), (4, 18041230), (5, 14432984), (8, 9020615), (10, 7216492), (20, 3608246), (40, 1804123), (41, 1760120), (79, 913480), (82, 880060), (158, 456740), (164, 440030), (205, 352024), (316, 228370), (328, 220015), (395, 182696), (410, 176012), (557, 129560), (632, 114185), (790, 91348), (820, 88006), (1114, 64780), (1580, 45674), (1640, 44003), (2228, 32390), (2785, 25912), (3160, 22837), (3239, 22280), (4456, 16195), (5570, 12956), (6478, 11140)]