18737901

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 33755904

約数和(自身を除く): 15018003

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 137, 167, 273, 411, 501, 819, 959, 1169, 1233, 1503, 1781, 2171, 2877, 3507, 5343, 6513, 8631, 10521, 12467, 15197, 16029, 19539, 22879, 37401, 45591, 68637, 112203, 136773, 160153, 205911, 297427, 480459, 892281, 1441377, 2081989, 2676843, 6245967, 18737901]

約数ペア:

[(1, 18737901), (3, 6245967), (7, 2676843), (9, 2081989), (13, 1441377), (21, 892281), (39, 480459), (63, 297427), (91, 205911), (117, 160153), (137, 136773), (167, 112203), (273, 68637), (411, 45591), (501, 37401), (819, 22879), (959, 19539), (1169, 16029), (1233, 15197), (1503, 12467), (1781, 10521), (2171, 8631), (2877, 6513), (3507, 5343)]