201999975

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 345037440

約数和(自身を除く): 143037465

約数列:

[1, 3, 5, 15, 25, 61, 67, 75, 183, 201, 305, 335, 659, 915, 1005, 1525, 1675, 1977, 3295, 4087, 4575, 5025, 9885, 12261, 16475, 20435, 40199, 44153, 49425, 61305, 102175, 120597, 132459, 200995, 220765, 306525, 602985, 662295, 1004975, 1103825, 2693333, 3014925, 3311475, 8079999, 13466665, 40399995, 67333325, 201999975]

約数ペア:

[(1, 201999975), (3, 67333325), (5, 40399995), (15, 13466665), (25, 8079999), (61, 3311475), (67, 3014925), (75, 2693333), (183, 1103825), (201, 1004975), (305, 662295), (335, 602985), (659, 306525), (915, 220765), (1005, 200995), (1525, 132459), (1675, 120597), (1977, 102175), (3295, 61305), (4087, 49425), (4575, 44153), (5025, 40199), (9885, 20435), (12261, 16475)]