28238955

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 51020928

約数和(自身を除く): 22781973

約数列:

[1, 3, 5, 15, 17, 37, 41, 51, 73, 85, 111, 123, 185, 205, 219, 255, 365, 555, 615, 629, 697, 1095, 1241, 1517, 1887, 2091, 2701, 2993, 3145, 3485, 3723, 4551, 6205, 7585, 8103, 8979, 9435, 10455, 13505, 14965, 18615, 22755, 25789, 40515, 44895, 45917, 50881, 77367, 110741, 128945, 137751, 152643, 229585, 254405, 332223, 386835, 553705, 688755, 763215, 1661115, 1882597, 5647791, 9412985, 28238955]

約数ペア:

[(1, 28238955), (3, 9412985), (5, 5647791), (15, 1882597), (17, 1661115), (37, 763215), (41, 688755), (51, 553705), (73, 386835), (85, 332223), (111, 254405), (123, 229585), (185, 152643), (205, 137751), (219, 128945), (255, 110741), (365, 77367), (555, 50881), (615, 45917), (629, 44895), (697, 40515), (1095, 25789), (1241, 22755), (1517, 18615), (1887, 14965), (2091, 13505), (2701, 10455), (2993, 9435), (3145, 8979), (3485, 8103), (3723, 7585), (4551, 6205)]