28005375

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 51757056

約数和(自身を除く): 23751681

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 125, 191, 255, 345, 375, 391, 425, 573, 575, 955, 1173, 1275, 1725, 1955, 2125, 2865, 2875, 3247, 4393, 4775, 5865, 6375, 8625, 9741, 9775, 13179, 14325, 16235, 21965, 23875, 29325, 48705, 48875, 65895, 71625, 74681, 81175, 109825, 146625, 224043, 243525, 329475, 373405, 405875, 549125, 1120215, 1217625, 1647375, 1867025, 5601075, 9335125, 28005375]

約数ペア:

[(1, 28005375), (3, 9335125), (5, 5601075), (15, 1867025), (17, 1647375), (23, 1217625), (25, 1120215), (51, 549125), (69, 405875), (75, 373405), (85, 329475), (115, 243525), (125, 224043), (191, 146625), (255, 109825), (345, 81175), (375, 74681), (391, 71625), (425, 65895), (573, 48875), (575, 48705), (955, 29325), (1173, 23875), (1275, 21965), (1725, 16235), (1955, 14325), (2125, 13179), (2865, 9775), (2875, 9741), (3247, 8625), (4393, 6375), (4775, 5865)]