28909725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 52080000

約数和(自身を除く): 23170275

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 149, 195, 199, 325, 447, 597, 745, 975, 995, 1937, 2235, 2587, 2985, 3725, 4975, 5811, 7761, 9685, 11175, 12935, 14925, 29055, 29651, 38805, 48425, 64675, 88953, 145275, 148255, 194025, 385463, 444765, 741275, 1156389, 1927315, 2223825, 5781945, 9636575, 28909725]

約数ペア:

[(1, 28909725), (3, 9636575), (5, 5781945), (13, 2223825), (15, 1927315), (25, 1156389), (39, 741275), (65, 444765), (75, 385463), (149, 194025), (195, 148255), (199, 145275), (325, 88953), (447, 64675), (597, 48425), (745, 38805), (975, 29651), (995, 29055), (1937, 14925), (2235, 12935), (2587, 11175), (2985, 9685), (3725, 7761), (4975, 5811)]