1821983891

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61987}}^1$

素因数の和:62043

約数の個数: 32

約数和(自身を含む): 2499356160

約数和(自身を除く): 677372269

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 1547, 1729, 2261, 4199, 29393, 61987, 433909, 805831, 1053779, 1177753, 5640817, 7376453, 8244271, 13699127, 15310789, 20021801, 95893889, 107175523, 140152607, 260283413, 1821983891]

約数ペア:

[(1, 1821983891), (7, 260283413), (13, 140152607), (17, 107175523), (19, 95893889), (91, 20021801), (119, 15310789), (133, 13699127), (221, 8244271), (247, 7376453), (323, 5640817), (1547, 1177753), (1729, 1053779), (2261, 805831), (4199, 433909), (29393, 61987)]