21724885

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 12748715

約数列:

[1, 5, 7, 13, 19, 35, 49, 65, 91, 95, 133, 245, 247, 359, 455, 637, 665, 931, 1235, 1729, 1795, 2513, 3185, 4655, 4667, 6821, 8645, 12103, 12565, 17591, 23335, 32669, 34105, 47747, 60515, 87955, 88673, 163345, 228683, 238735, 334229, 443365, 620711, 1143415, 1671145, 3103555, 4344977, 21724885]

約数ペア:

[(1, 21724885), (5, 4344977), (7, 3103555), (13, 1671145), (19, 1143415), (35, 620711), (49, 443365), (65, 334229), (91, 238735), (95, 228683), (133, 163345), (245, 88673), (247, 87955), (359, 60515), (455, 47747), (637, 34105), (665, 32669), (931, 23335), (1235, 17591), (1729, 12565), (1795, 12103), (2513, 8645), (3185, 6821), (4655, 4667)]