21512667

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1299

約数の個数: 32

約数和(自身を含む): 34228224

約数和(自身を除く): 12715557

約数列:

[1, 3, 11, 17, 31, 33, 51, 93, 187, 341, 527, 561, 1023, 1237, 1581, 3711, 5797, 13607, 17391, 21029, 38347, 40821, 63087, 115041, 231319, 421817, 651899, 693957, 1265451, 1955697, 7170889, 21512667]

約数ペア:

[(1, 21512667), (3, 7170889), (11, 1955697), (17, 1265451), (31, 693957), (33, 651899), (51, 421817), (93, 231319), (187, 115041), (341, 63087), (527, 40821), (561, 38347), (1023, 21029), (1237, 17391), (1581, 13607), (3711, 5797)]