221520775

素因数分解:

$5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 322979328

約数和(自身を除く): 101458553

約数列:

[1, 5, 7, 25, 35, 83, 101, 151, 175, 415, 505, 581, 707, 755, 1057, 2075, 2525, 2905, 3535, 3775, 5285, 8383, 12533, 14525, 15251, 17675, 26425, 41915, 58681, 62665, 76255, 87731, 106757, 209575, 293405, 313325, 381275, 438655, 533785, 1265833, 1467025, 2193275, 2668925, 6329165, 8860831, 31645825, 44304155, 221520775]

約数ペア:

[(1, 221520775), (5, 44304155), (7, 31645825), (25, 8860831), (35, 6329165), (83, 2668925), (101, 2193275), (151, 1467025), (175, 1265833), (415, 533785), (505, 438655), (581, 381275), (707, 313325), (755, 293405), (1057, 209575), (2075, 106757), (2525, 87731), (2905, 76255), (3535, 62665), (3775, 58681), (5285, 41915), (8383, 26425), (12533, 17675), (14525, 15251)]