19855125

素因数分解:

$3^4\times 5^3\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 80

約数和(自身を含む): 38733552

約数和(自身を除く): 18878427

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 53, 75, 81, 111, 125, 135, 159, 185, 225, 265, 333, 375, 405, 477, 555, 675, 795, 925, 999, 1125, 1325, 1431, 1665, 1961, 2025, 2385, 2775, 2997, 3375, 3975, 4293, 4625, 4995, 5883, 6625, 7155, 8325, 9805, 10125, 11925, 13875, 14985, 17649, 19875, 21465, 24975, 29415, 35775, 41625, 49025, 52947, 59625, 74925, 88245, 107325, 124875, 147075, 158841, 178875, 245125, 264735, 374625, 441225, 536625, 735375, 794205, 1323675, 2206125, 3971025, 6618375, 19855125]

約数ペア:

[(1, 19855125), (3, 6618375), (5, 3971025), (9, 2206125), (15, 1323675), (25, 794205), (27, 735375), (37, 536625), (45, 441225), (53, 374625), (75, 264735), (81, 245125), (111, 178875), (125, 158841), (135, 147075), (159, 124875), (185, 107325), (225, 88245), (265, 74925), (333, 59625), (375, 52947), (405, 49025), (477, 41625), (555, 35775), (675, 29415), (795, 24975), (925, 21465), (999, 19875), (1125, 17649), (1325, 14985), (1431, 13875), (1665, 11925), (1961, 10125), (2025, 9805), (2385, 8325), (2775, 7155), (2997, 6625), (3375, 5883), (3975, 4995), (4293, 4625)]