28319823

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{401}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 50169600

約数和(自身を除く): 21849777

約数列:

[1, 3, 7, 9, 19, 21, 57, 59, 63, 133, 171, 177, 399, 401, 413, 531, 1121, 1197, 1203, 1239, 2807, 3363, 3609, 3717, 7619, 7847, 8421, 10089, 22857, 23541, 23659, 25263, 53333, 68571, 70623, 70977, 159999, 165613, 212931, 449521, 479997, 496839, 1348563, 1490517, 3146647, 4045689, 9439941, 28319823]

約数ペア:

[(1, 28319823), (3, 9439941), (7, 4045689), (9, 3146647), (19, 1490517), (21, 1348563), (57, 496839), (59, 479997), (63, 449521), (133, 212931), (171, 165613), (177, 159999), (399, 70977), (401, 70623), (413, 68571), (531, 53333), (1121, 25263), (1197, 23659), (1203, 23541), (1239, 22857), (2807, 10089), (3363, 8421), (3609, 7847), (3717, 7619)]