221172273

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1\times {\mathrm{397}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 377495040

約数和(自身を除く): 156322767

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 239, 259, 333, 397, 717, 777, 1191, 1673, 2151, 2331, 2779, 3573, 5019, 8337, 8843, 14689, 15057, 25011, 26529, 44067, 61901, 79587, 94883, 102823, 132201, 185703, 284649, 308469, 557109, 664181, 853947, 925407, 1992543, 3510671, 5977629, 10532013, 24574697, 31596039, 73724091, 221172273]

約数ペア:

[(1, 221172273), (3, 73724091), (7, 31596039), (9, 24574697), (21, 10532013), (37, 5977629), (63, 3510671), (111, 1992543), (239, 925407), (259, 853947), (333, 664181), (397, 557109), (717, 308469), (777, 284649), (1191, 185703), (1673, 132201), (2151, 102823), (2331, 94883), (2779, 79587), (3573, 61901), (5019, 44067), (8337, 26529), (8843, 25011), (14689, 15057)]