19956915

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19441485

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 89, 99, 135, 151, 165, 267, 297, 445, 453, 495, 755, 801, 979, 1335, 1359, 1485, 1661, 2265, 2403, 2937, 4005, 4077, 4895, 4983, 6795, 8305, 8811, 12015, 13439, 14685, 14949, 20385, 24915, 26433, 40317, 44055, 44847, 67195, 74745, 120951, 132165, 147829, 201585, 224235, 362853, 443487, 604755, 739145, 1330461, 1814265, 2217435, 3991383, 6652305, 19956915]

約数ペア:

[(1, 19956915), (3, 6652305), (5, 3991383), (9, 2217435), (11, 1814265), (15, 1330461), (27, 739145), (33, 604755), (45, 443487), (55, 362853), (89, 224235), (99, 201585), (135, 147829), (151, 132165), (165, 120951), (267, 74745), (297, 67195), (445, 44847), (453, 44055), (495, 40317), (755, 26433), (801, 24915), (979, 20385), (1335, 14949), (1359, 14685), (1485, 13439), (1661, 12015), (2265, 8811), (2403, 8305), (2937, 6795), (4005, 4983), (4077, 4895)]