20499900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2971}}^1$

素因数の和:3011

約数の個数: 72

約数和(自身を含む): 61912704

約数和(自身を除く): 41412804

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 25, 30, 46, 50, 60, 69, 75, 92, 100, 115, 138, 150, 230, 276, 300, 345, 460, 575, 690, 1150, 1380, 1725, 2300, 2971, 3450, 5942, 6900, 8913, 11884, 14855, 17826, 29710, 35652, 44565, 59420, 68333, 74275, 89130, 136666, 148550, 178260, 204999, 222825, 273332, 297100, 341665, 409998, 445650, 683330, 819996, 891300, 1024995, 1366660, 1708325, 2049990, 3416650, 4099980, 5124975, 6833300, 10249950, 20499900]

約数ペア:

[(1, 20499900), (2, 10249950), (3, 6833300), (4, 5124975), (5, 4099980), (6, 3416650), (10, 2049990), (12, 1708325), (15, 1366660), (20, 1024995), (23, 891300), (25, 819996), (30, 683330), (46, 445650), (50, 409998), (60, 341665), (69, 297100), (75, 273332), (92, 222825), (100, 204999), (115, 178260), (138, 148550), (150, 136666), (230, 89130), (276, 74275), (300, 68333), (345, 59420), (460, 44565), (575, 35652), (690, 29710), (1150, 17826), (1380, 14855), (1725, 11884), (2300, 8913), (2971, 6900), (3450, 5942)]